[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Brad Figg]

** Tags added: cscc

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  SourcePackage: xorg-server
  UpgradeStatus: No upgrade log present (probably fresh 

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Christopher M. Penalver]

kamiccolo, a 4.2.x kernel is EOL, and not supported in Ubuntu. For more on 
this, please see:
https://wiki.ubuntu.com/Kernel/LTSEnablementStack
https://wiki.ubuntu.com/Releases

However, if you have an issue booting a supported version of Ubuntu, please 
file a new report via:
https://bugs.launchpad.net/ubuntu/+source/linux/+filebug

You will want to provide the details from
https://wiki.ubuntu.com/DebuggingKernelBoot in your new report.

Also, please feel free to subscribe me to it.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserv

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Christopher M. Penalver]

** No longer affects: linux (Ubuntu)

** Project changed: xorg-server => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: High => Undecided

** Changed in: linux (Ubuntu)
   Status: Confirmed => New

** Changed in: linux (Ubuntu)
 Remote watch: freedesktop.org Bugzilla #89055 => None

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

** Changed in: linux (Ubuntu)
   Status: New => Incomplete

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubun

[Kernel-packages] [Bug 1523088] [NEW] WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Launchpad Bug Tracker]

You have been subscribed to a public bug:

I always get an warning and stacktrace (and it seems to hang a little
bit). This occurs after reboot as well as when I move with the cursor
between my hdmi monitor and my laptop. (This only occurs when HDMI is
connected)

Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
Processor: i5 6300hq
Graphics: gtx950m

WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
[Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
[Sam Dez  5 12:34:46 2015] Modules linked in:
[Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
[Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
[Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE   
4.2.0-19-generic #23-Ubuntu
[Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
[Sam Dez  5 12:34:46 2015]   a287b8f0 880071b03518 
817e93f9
[Sam Dez  5 12:34:46 2015]   880071b03570 880071b03558 
8107b3d6
[Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 880279bf2000 
880279bf7000
[Sam Dez  5 12:34:46 2015] Call Trace:
[Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
[Sam Dez  5 12:34:46 2015]  [] warn_slowpath_common+0x86/0xc0
[Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
[Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
[Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
[Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 [i915]
[Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
[Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
[Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
[Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
[Sam Dez  5 12:34:46 2015]  [] intel_atomic_commit+0x6b/0x100 
[i915]
[Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
[Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
[Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
[Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
[Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
[Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
[Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
[Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
[Sam Dez  5 12:34:46 2015]  [] ? drm_mode_setcrtc+0x500/0x500 
[drm]
[Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
[Sam Dez  5 12:34:46 2015]  [] ? __set_task_blocked+0x41/0xa0
[Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
[Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
[Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
Uname: Linux 4.2.0-19-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Sat Dec  5 12:35:24 2015
ExecutablePath: /usr/bin/Xorg
InstallationDate: Installed on 2015-12-04 (0 days ago)
InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: xorg-server
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux (Ubuntu)
 Importance: Undecided
 Status: New


** Tags: amd64 apport-bug wily
-- 
WARN_ON(!wm_changed) warning and stacktrace in kernel log
https://bugs.launchpad.net/bugs/1523088
You received this bug notification because you are a member of Kernel Packages, 
which is subscribed to linux in Ubuntu.

-- 
Mailing list: https://launchpad.net/~kernel-pa

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[kamiccolo]

Following on 4.2.0-generic (16.04 does not boot at all. At least most of
the time):

[  601.848346] WARNING: CPU: 0 PID: 50 at 
/build/linux-lts-wily-Ejb_ce/linux-lts-wily-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404
 skl_update_other_pipe_wm+0x205/0x210 [i915]()
[  601.848349] WARN_ON(!wm_changed)
[  601.848390] Modules linked in: bridge stp llc intel_rapl 
x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm i915 
crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper 
ablk_helper cryptd drm_kms_helper binfmt_misc shpchp input_leds drm mei_me mei 
nls_iso8859_1 8250_fintek i2c_hid video pinctrl_sunrisepoint intel_lpss_acpi 
pinctrl_intel intel_lpss acpi_als wmi kfifo_buf industrialio acpi_pad lp 
mac_hid parport hid_generic igb e1000e i2c_algo_bit dca usbhid ptp ahci hid 
pps_core libahci
[  601.848395] CPU: 0 PID: 50 Comm: kworker/0:1 Tainted: GW   
4.2.0-42-generic #49~14.04.1-Ubuntu
[  601.848397] Hardware name: Default string Default string/SKYBAY, BIOS 5.11 
09/25/2017
[  601.848406] Workqueue: events console_callback
[  601.848411]   88042f0a3618 817bc281 
88042f0a3668
[  601.848414]  c0385370 88042f0a3658 8107998a 
88042f0a3790
[  601.848418]  88042ba23000 88042f0a3700 88042f0a37b4 
88042ba22000
[  601.848419] Call Trace:
[  601.848426]  [] dump_stack+0x63/0x81
[  601.848435]  [] warn_slowpath_common+0x8a/0xc0
[  601.848440]  [] warn_slowpath_fmt+0x46/0x50
[  601.848468]  [] skl_update_other_pipe_wm+0x205/0x210 [i915]
[  601.848497]  [] skl_update_wm+0x1f6/0x810 [i915]
[  601.848501]  [] ? __schedule+0x358/0x930
[  601.848530]  [] intel_update_watermarks+0x1e/0x30 [i915]
[  601.848578]  [] haswell_crtc_disable+0x167/0x330 [i915]
[  601.848623]  [] intel_crtc_control+0x5e/0x110 [i915]
[  601.848662]  [] intel_crtc_update_dpms+0x5e/0x80 [i915]
[  601.848703]  [] intel_connector_dpms+0x5e/0x70 [i915]
[  601.848719]  [] drm_fb_helper_dpms.isra.6+0x95/0xe0 
[drm_kms_helper]
[  601.848730]  [] drm_fb_helper_blank+0x32/0x80 
[drm_kms_helper]
[  601.848773]  [] intel_fbdev_blank+0x1a/0x60 [i915]
[  601.848779]  [] ? blocking_notifier_call_chain+0x16/0x20
[  601.848784]  [] fb_blank+0x57/0xb0
[  601.848789]  [] fbcon_blank+0x1fe/0x2b0
[  601.848794]  [] ? dequeue_entity+0x152/0x690
[  601.848799]  [] ? get_color.isra.15+0x35/0x110
[  601.848804]  [] ? lock_timer_base.isra.35+0x58/0x80
[  601.848807]  [] ? try_to_del_timer_sync+0x4f/0x70
[  601.848812]  [] do_blank_screen+0x1bd/0x260
[  601.848817]  [] console_callback+0x68/0x150
[  601.848819]  [] ? __schedule+0x358/0x930
[  601.848826]  [] process_one_work+0x150/0x3f0
[  601.848831]  [] worker_thread+0x11a/0x470
[  601.848837]  [] ? rescuer_thread+0x310/0x310
[  601.848840]  [] kthread+0xc9/0xe0
[  601.848845]  [] ? kthread_create_on_node+0x1c0/0x1c0
[  601.848849]  [] ret_from_fork+0x3f/0x70
[  601.848853]  [] ? kthread_create_on_node+0x1c0/0x1c0
[  601.848856] ---[ end trace 3cea3aacb2b553b0 ]---

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[kamiccolo]

And that one goes for darn PICO500 machine >_<

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  SourcePackage: xor

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Justin King-Lacroix]

Also affects 14.04 with the Xenial HWE.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  SourcePackage: xorg-serve

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Thomas Mayer]

This issue also affects ubuntu 16.04 as can be seen in
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553503

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Christopher M. Penalver]

dan, to confirm, could you please test drm-intel-nightly via
http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-nightly/ and
advise to the results?

** Changed in: linux (Ubuntu)
   Status: Confirmed => Incomplete

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  Executabl

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Florent Mertens]

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Florent Mertens]

I have got hit by this bug as well. It seams to be fixed upstream:
"The series that fixes this bug has now been merged to our drm-intel-nightly 
branch.  It should land upstream in kernel 4.8."

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  Instal

[Kernel-packages] [Bug 1523088]

[Matthew-d-roper]

Here's the latest revision of the patch series to fix this bug:

  https://patchwork.freedesktop.org/series/6944/

Since I got a few offline questions last time, the patches here are
meant to be applied on top of the drm-intel-nightly branch of
git://anongit.freedesktop.org/drm-intel

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Ar

[Kernel-packages] [Bug 1523088]

[Kman]

Been getting this in Fedora 23 (+ testing) 64-bit ever since upgrading
the hardware.

A desktop system, Intel i7 6700, built-in video, two monitors (HDMI +
DVI).

The current kernel is:

Linux fiona 4.4.9-300.fc23.x86_64 #1 SMP Wed May 4 23:56:27 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux

[1.756194] [ cut here ]
[1.756271] WARNING: CPU: 0 PID: 135 at drivers/gpu/drm/i915/intel_pm.c:3601 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
[1.756273] WARN_ON(!wm_changed)
[1.756285] Modules linked in: i915 e1000e i2c_algo_bit drm_kms_helper uas 
ptp serio_raw usb_storage pps_core drm nvme video i2c_hid fjes
[1.756290] CPU: 0 PID: 135 Comm: kworker/u16:3 Not tainted 
4.4.9-300.fc23.x86_64 #1
[1.756292] Hardware name: System manufacturer System Product Name/Z170-A, 
BIOS 1702 01/28/2016
[1.756300] Workqueue: events_unbound async_run_entry_fn
[1.756305]  0286 7d583ed3 88045e1174b0 
813b62ee
[1.756308]  88045e1174f8 a0220bf8 88045e1174e8 
810a4252
[1.756311]  88045e11761c 88045ba81000 88045ba8 

[1.756312] Call Trace:
[1.756322]  [] dump_stack+0x63/0x85
[1.756329]  [] warn_slowpath_common+0x82/0xc0
[1.756333]  [] warn_slowpath_fmt+0x5c/0x80
[1.756393]  [] skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
[1.756448]  [] skl_update_wm+0x252/0x750 [i915]
[1.756501]  [] intel_update_watermarks+0x1e/0x30 [i915]
[1.756581]  [] haswell_crtc_enable+0x370/0x870 [i915]
[1.756656]  [] intel_atomic_commit+0x492/0x1420 [i915]
[1.756694]  [] ? drm_atomic_check_only+0x18e/0x590 [drm]
[1.756727]  [] drm_atomic_commit+0x37/0x60 [drm]
[1.756742]  [] restore_fbdev_mode+0x22f/0x260 
[drm_kms_helper]
[1.756756]  [] 
drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper]
[1.756767]  [] drm_fb_helper_set_par+0x2d/0x50 
[drm_kms_helper]
[1.756847]  [] intel_fbdev_set_par+0x1a/0x60 [i915]
[1.756853]  [] fbcon_init+0x570/0x5f0
[1.756858]  [] visual_init+0xca/0x130
[1.756861]  [] do_bind_con_driver+0x1c1/0x3a0
[1.756865]  [] do_take_over_console+0x149/0x1a0
[1.756870]  [] do_fbcon_takeover+0x57/0xb0
[1.756874]  [] fbcon_event_notify+0x658/0x750
[1.756878]  [] notifier_call_chain+0x4a/0x70
[1.756882]  [] __blocking_notifier_call_chain+0x47/0x60
[1.756885]  [] blocking_notifier_call_chain+0x16/0x20
[1.756890]  [] fb_notifier_call_chain+0x1b/0x20
[1.756896]  [] register_framebuffer+0x20f/0x350
[1.756909]  [] drm_fb_helper_initial_config+0x28a/0x410 
[drm_kms_helper]
[1.756978]  [] intel_fbdev_initial_config+0x1b/0x20 [i915]
[1.756984]  [] async_run_entry_fn+0x4a/0x140
[1.756988]  [] process_one_work+0x159/0x430
[1.756993]  [] worker_thread+0x4e/0x450
[1.756997]  [] ? process_one_work+0x430/0x430
[1.757000]  [] kthread+0xd8/0xf0
[1.757003]  [] ? kthread_worker_fn+0x160/0x160
[1.757008]  [] ret_from_fork+0x3f/0x70
[1.757011]  [] ? kthread_worker_fn+0x160/0x160
[1.757041] ---[ end trace fafafc83ac3f9b24 ]---

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss 

[Kernel-packages] [Bug 1523088]

[Prasad H L Bhat]

Created attachment 123545
attachment-22347-0.html

Step 2 leads to disabling of OpenGL backend which could mean performance
might be a bit lower, but your system will be very stable and usable with
this.

Hope this info helps some folks.

On 7 May 2016 at 23:54,  wrote:

> *Comment # 55  on
> bug 89055  from
> k...@fastmail.com  *
>
> Been getting this in Fedora 23 (+ testing) 64-bit ever since upgrading the
> hardware.
>
> A desktop system, Intel i7 6700, built-in video, two monitors (HDMI + DVI).
>
> The current kernel is:
>
> Linux fiona 4.4.9-300.fc23.x86_64 #1 SMP Wed May 4 23:56:27 UTC 2016 x86_64
> x86_64 x86_64 GNU/Linux
>
> [1.756194] [ cut here ]
> [1.756271] WARNING: CPU: 0 PID: 135 at 
> drivers/gpu/drm/i915/intel_pm.c:3601
> skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
> [1.756273] WARN_ON(!wm_changed)
> [1.756285] Modules linked in: i915 e1000e i2c_algo_bit drm_kms_helper uas
> ptp serio_raw usb_storage pps_core drm nvme video i2c_hid fjes
> [1.756290] CPU: 0 PID: 135 Comm: kworker/u16:3 Not tainted
> 4.4.9-300.fc23.x86_64 #1
> [1.756292] Hardware name: System manufacturer System Product Name/Z170-A,
> BIOS 1702 01/28/2016
> [1.756300] Workqueue: events_unbound async_run_entry_fn
> [1.756305]  0286 7d583ed3 88045e1174b0
> 813b62ee
> [1.756308]  88045e1174f8 a0220bf8 88045e1174e8
> 810a4252
> [1.756311]  88045e11761c 88045ba81000 88045ba8
> 
> [1.756312] Call Trace:
> [1.756322]  [] dump_stack+0x63/0x85
> [1.756329]  [] warn_slowpath_common+0x82/0xc0
> [1.756333]  [] warn_slowpath_fmt+0x5c/0x80
> [1.756393]  [] skl_update_other_pipe_wm+0x1de/0x1f0
> [i915]
> [1.756448]  [] skl_update_wm+0x252/0x750 [i915]
> [1.756501]  [] intel_update_watermarks+0x1e/0x30 [i915]
> [1.756581]  [] haswell_crtc_enable+0x370/0x870 [i915]
> [1.756656]  [] intel_atomic_commit+0x492/0x1420 [i915]
> [1.756694]  [] ? drm_atomic_check_only+0x18e/0x590 [drm]
> [1.756727]  [] drm_atomic_commit+0x37/0x60 [drm]
> [1.756742]  [] restore_fbdev_mode+0x22f/0x260
> [drm_kms_helper]
> [1.756756]  []
> drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper]
> [1.756767]  [] drm_fb_helper_set_par+0x2d/0x50
> [drm_kms_helper]
> [1.756847]  [] intel_fbdev_set_par+0x1a/0x60 [i915]
> [1.756853]  [] fbcon_init+0x570/0x5f0
> [1.756858]  [] visual_init+0xca/0x130
> [1.756861]  [] do_bind_con_driver+0x1c1/0x3a0
> [1.756865]  [] do_take_over_console+0x149/0x1a0
> [1.756870]  [] do_fbcon_takeover+0x57/0xb0
> [1.756874]  [] fbcon_event_notify+0x658/0x750
> [1.756878]  [] notifier_call_chain+0x4a/0x70
> [1.756882]  [] __blocking_notifier_call_chain+0x47/0x60
> [1.756885]  [] blocking_notifier_call_chain+0x16/0x20
> [1.756890]  [] fb_notifier_call_chain+0x1b/0x20
> [1.756896]  [] register_framebuffer+0x20f/0x350
> [1.756909]  [] drm_fb_helper_initial_config+0x28a/0x410
> [drm_kms_helper]
> [1.756978]  [] intel_fbdev_initial_config+0x1b/0x20
> [i915]
> [1.756984]  [] async_run_entry_fn+0x4a/0x140
> [1.756988]  [] process_one_work+0x159/0x430
> [1.756993]  [] worker_thread+0x4e/0x450
> [1.756997]  [] ? process_one_work+0x430/0x430
> [1.757000]  [] kthread+0xd8/0xf0
> [1.757003]  [] ? kthread_worker_fn+0x160/0x160
> [1.757008]  [] ret_from_fork+0x3f/0x70
> [1.757011]  [] ? kthread_worker_fn+0x160/0x160
> [1.757041] ---[ end trace fafafc83ac3f9b24 ]---
>
> --
> You are receiving this mail because:
>
>- You are on the CC list for the bug.
>
>

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi 

[Kernel-packages] [Bug 1523088]

[Prasad H L Bhat]

Created attachment 123355
attachment-32584-0.html

Could someone please let me know how to apply this patchwork to mainstream
kernel source?

I tried on the latest 4.6-rc5 and it failed. It did work on
drm-intel-nightly though which is a not mainstream branch.

On 26 April 2016 at 07:45,  wrote:

> *Comment # 52  on
> bug 89055  from
> dwk...@gmail.com  *
>
> I can confirm that this works for me on SKL, i5-6200U dell xps 13 9350. There
> used to be a crash at every boot and two on suspend, with external HDMI 
> plugged
> in. I patched the drm-nightly kernel and compiled it manually.
>
> --
> You are receiving this mail because:
>
>- You are on the CC list for the bug.
>
>

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam D

[Kernel-packages] [Bug 1523088]

[Dwk128]

Unfortunately, while this patch (against drm-nightly 4.6.0-rc5) did
eliminate the stack traces from my dmesg logs, it seems to have
*introduced* a freezing bug. Every six to twelve hours or so the system
freezes completely, audio stops, caps lock stops working (though it
doesn't blink as in a panic). I assume this is a deadlock of some sort
because there is no indication in any system logs that a freeze has
occurred.

I have been having many issues related to suspend, so I thought at first
this freeze was another manifestation of the same bug. But after
happening four or five times, it just happened last night after several
hours of being on without ever having been suspended. I can try the same
kernel unpatched but I have tried a similar version before and I suspect
the freeze is new.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  []

[Kernel-packages] [Bug 1523088]

[Matthew-d-roper]

Note that the series linked above is fully reviewed now, but we probably
want to hold off on merging it until one more issue is fixed.
Apparently some BIOS can setup an unusual/unexpected initial DDB
allocation that causes us problems when we try to inherit it and use it
for subsequent watermark calculations.  See

  https://lists.freedesktop.org/archives/intel-
gfx/2016-April/093739.html

for details.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersio

[Kernel-packages] [Bug 1523088]

[Cezar-burlacu]

I can confirm that https://patchwork.freedesktop.org/series/5158/ fixes
the problem.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release

[Kernel-packages] [Bug 1523088]

[Yann-argotti]

QA please re-test with latest patch

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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  SourcePackage: xorg-server
  

[Kernel-packages] [Bug 1523088]

[Hector-yuen]

Has been happening to me as well

i7-6560U running 3.19.0-58-generic

[ 2523.443953] [ cut here ]
[ 2523.443993] WARNING: CPU: 2 PID: 1681 at 
/build/linux-lts-vivid-GISjUd/linux-lts-vivid-3.19.0/ubuntu/i915/intel_pm.c:3406
 skl_update_other_pipe_wm+0x210/0x220 [i915_bpo]()
[ 2523.443995] WARN_ON(!wm_changed)
[ 2523.443996] Modules linked in: hid_generic cdc_ether usbnet r8152 mii 
dell_wmi sparse_keymap ctr ccm nvram msr dm_crypt arc4 snd_hda_codec_hdmi(OE) 
dell_led dell_laptop dcdbas x86_pkg_temp_thermal coretemp kvm_intel kvm 
crct10dif_pclmul crc32_pclmul snd_hda_codec_realtek(OE) 
snd_hda_codec_generic(OE) aesni_intel snd_hda_intel(OE) snd_hda_codec(OE) 
snd_hda_core(OE) snd_hwdep snd_pcm aes_x86_64 lrw gf128mul glue_helper 
ablk_helper snd_seq_midi cryptd iwlmvm(OE) snd_seq_midi_event mac80211(OE) 
snd_rawmidi dm_multipath joydev scsi_dh iwlwifi(OE) serio_raw rts_cr_host(OE) 
cfg80211(OE) rts_cr_core(OE) uvcvideo videobuf2_vmalloc videobuf2_memops 
videobuf2_core v4l2_common videodev media hid_multitouch snd_seq snd_seq_device 
snd_timer snd soundcore shpchp i2c_hid acpi_pad int3403_thermal int3400_thermal 
acpi_thermal_rel mac_hid intel_hid(OE) i915_bpo intel_ips drm_kms_helper cmac 
drm i2c_algo_bit parport_pc ppdev rfcomm(OE) bnep(OE) lp parport nls_iso8859_1 
btrfs xor raid6_pq dm_mirror dm
 _region_hash dm_log usbhid hid btusb(OE) btintel(OE) bluetooth(OE) compat(OE) 
psmouse ahci nvme libahci wmi video
[ 2523.444052] CPU: 2 PID: 1681 Comm: Xorg Tainted: GW  OE  
3.19.0-58-generic #64~14.04.1-Ubuntu
[ 2523.444054] Hardware name: Dell Inc. XPS 13 9350/09JHRY, BIOS 1.3.3 
03/01/2016
[ 2523.444056]   88046af8f588 817b6c3d 
88046af8f5d8
[ 2523.444059]  c0448268 88046af8f5c8 81075f3a 
88046af8f700
[ 2523.444061]  880466999000 88046af8f670 88046af8f724 
880466998000
[ 2523.444064] Call Trace:
[ 2523.444071]  [] dump_stack+0x63/0x81
[ 2523.444076]  [] warn_slowpath_common+0x8a/0xc0
[ 2523.444078]  [] warn_slowpath_fmt+0x46/0x50
[ 2523.444097]  [] skl_update_other_pipe_wm+0x210/0x220 
[i915_bpo]
[ 2523.444116]  [] skl_update_wm+0x205/0x850 [i915_bpo]
[ 2523.444141]  [] ? gen9_read32+0x6e/0x310 [i915_bpo]
[ 2523.444159]  [] intel_update_watermarks+0x1e/0x30 
[i915_bpo]
[ 2523.444184]  [] intel_finish_crtc_commit+0x190/0x1b0 
[i915_bpo]
[ 2523.444194]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x169/0x240 [drm_kms_helper]
[ 2523.444221]  [] intel_atomic_commit+0x68/0x100 [i915_bpo]
[ 2523.444243]  [] drm_atomic_commit+0x37/0x60 [drm]
[ 2523.444252]  [] drm_atomic_helper_update_plane+0xed/0x140 
[drm_kms_helper]
[ 2523.444268]  [] __setplane_internal+0x190/0x2c0 [drm]
[ 2523.444282]  [] drm_mode_cursor_universal+0x11c/0x200 [drm]
[ 2523.444286]  [] ? __ww_mutex_lock+0x1b/0x97
[ 2523.444298]  [] drm_mode_cursor_common+0x7c/0x1b0 [drm]
[ 2523.444301]  [] ? __sigqueue_free.part.12+0x37/0x40
[ 2523.444317]  [] drm_mode_cursor_ioctl+0x41/0x50 [drm]
[ 2523.444317]  [] drm_mode_cursor_ioctl+0x41/0x50 [drm]
[ 2523.444329]  [] drm_ioctl+0x1ec/0x660 [drm]
[ 2523.444334]  [] do_vfs_ioctl+0x2f8/0x510
[ 2523.444336]  [] ? __set_task_blocked+0x32/0x70
[ 2523.444340]  [] ? __vfs_read+0x18/0x50
[ 2523.444343]  [] ? __set_current_blocked+0x36/0x90
[ 2523.444345]  [] SyS_ioctl+0x81/0xa0
[ 2523.444348]  [] ? SyS_rt_sigprocmask+0x86/0xb0
[ 2523.444352]  [] system_call_fastpath+0x16/0x1b
[ 2523.444354] ---[ end trace 5311b4c88f205a25 ]---

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_he

[Kernel-packages] [Bug 1523088]

[Cezar-burlacu]

I thought that the platform is inferred :)

I tested only on SKL (that is my workstation). Same machine as in the 
attachment used to reopen the issue 
https://bugs.freedesktop.org/attachment.cgi?id=121513
Distro: Ubuntu 16.04
CPU: Intel(R) Core(TM) i7-6700K
MB: Asus Z170-A

I don't have access to any APL machine.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  Appo

[Kernel-packages] [Bug 1523088]

[Yann-argotti]

Cezar, did you re-test on both APL & SKL? If so, please include your platform 
details.
Thanks

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf"

[Kernel-packages] [Bug 1523088]

[Treviño]

(In reply to Prasad H L Bhat from comment #34)
> I get the same error sometimes on my T460 laptop with Intel HD Graphics 520.
> When it occurs, it freezes the laptop completely (display turns off, no
> virtual terminals work, audio buffer keeps looping if present when freezing).

Same in a T460p, using the Ultra Dock station connected via HDMI to an
external monitor (that actually routes through DP3-1).

I see these errors multiple times, and I also experience some hangs
where I see visual corruptions in monitor. Not sure this can be related,
but indeed it has something to do with intel.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpat

[Kernel-packages] [Bug 1523088]

[Hector-yuen]

*** Bug 95075 has been marked as a duplicate of this bug. ***

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  Sou

[Kernel-packages] [Bug 1523088]

[Dwk128]

I can confirm that this works for me on SKL, i5-6200U dell xps 13 9350.
There used to be a crash at every boot and two on suspend, with external
HDMI plugged in. I patched the drm-nightly kernel and compiled it
manually.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutableP

[Kernel-packages] [Bug 1523088]

[Yann-argotti]

Christophe, please try with the patchset that Matt is pointing out to
confirm we don't reproduce the issue.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "W

[Kernel-packages] [Bug 1523088]

[Matthew-d-roper]

Latest version of the patch series that includes a fix for this is available 
here:
  https://patchwork.freedesktop.org/series/5158/

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  Installati

[Kernel-packages] [Bug 1523088]

[Christophe Prigent]

Created attachment 122960
APL-kms_pipe_crc_pipe-c.log

Reproduced on APL when executing igt@kms_pipe_crc_basic@suspend-read-
crc-pipe-c

[   72.109585] WARNING: CPU: 0 PID: 1639 at 
/home/shared/kernels/drm-intel-nightly/drivers/gpu/drm/i915/intel_pm.c:3647 
skl_update_other_pipe_wm+0x172/0x180 [i915]
[   72.109586] WARN_ON(!wm_changed)

Hardware
Platform: Broxton P A0 Platform
CPU Name : Intel(R) @ 1.2 GHz (family: 6, model: 92, stepping: 8) 4 cores
SoC : BROXTON-P A0
CRB : Apollo Lake LPDDR3 RVP1A
Software
Ubuntu 15.10 64 bits
BIOS (IFWI Version): 131.10
KSC: 1.12
Kernel drm-intel-nightly 4.6.0-rc3 dc5380b from 
http://cgit.freedesktop.org/drm-intel/
  commit dc5380b5263ebb0bf251bb09db542585702b528b
  Author: Chris Wilson 
  Date:   Mon Apr 11 20:43:45 2016 +0100
  drm-intel-nightly: 2016y-04m-11d-19h-43m-10s UTC integration manifest
libdrm-2.4.67-11 ea78c17 from git://anongit.freedesktop.org/mesa/drm
cairo 1.15.2 db8a7f1 from git://anongit.freedesktop.org/cairo
DMC 1.06 from https://01.org/linuxgraphics/downloads/broxton-dmc-1.06
intel-gpu-tools-1.14 c89e8db from 
http://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools.git

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:

[Kernel-packages] [Bug 1523088]

[Aljaz Prusnik]

I've tried linux-next today (4.6.0-rc3-next-20160412) as I've read there are 
quite some intel driver changes there and this issue with freezing is gone. I 
can now log-in with monitor attached and everything still works.
The message that we posted here still appears thus confirming what Matt said in 
comment 35 that it doesn't have a thing to do with our reported problems.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.2

[Kernel-packages] [Bug 1523088]

[Freedesktop-k]

forgot to add: If I disable HWcursor in X config the lockups completely
dissappear, but sadly the cursor also disappears whenever I stop to move
the mouse :/

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 

[Kernel-packages] [Bug 1523088]

[Freedesktop-k]

I'm having the same issue, on exactly the same machine as Aljaž Prusnik
in comment 31.

Machine is Dell XPS 9550 with i7-6700hq, kernel is 4.5.1 (from testing
on Arch Linux, using the X modesetting driver)

When starting X with external display attached and using xrandr it

a) takes very long to apply the mode, over 5 seconds
b) very often leaves the internal display completely black

When I move the mouse when it is in this mode, it'll lockup, leaving me
to only be able to poweroff the machine. When I redo xrandr without
moving the mouse, and get it to work on both screens, it'll work without
problems after that.

The lockups also happen after the screens wake up from DPMS power save.

It's not happening with a 4.4 kernel, but this one has other problems,
like endless flickering on the external display after a DPMS wakeup.

I'm really eager to have that patch, but since the merge window for 4.6
is already over, does this come with 4.7 the earliest?

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [dr

[Kernel-packages] [Bug 1523088]

[Matthew-d-roper]

This series should fix this defect once it gets reviewed and merged:
   https://patchwork.freedesktop.org/series/5158/

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubun

[Kernel-packages] [Bug 1523088]

[Prasad H L Bhat]

Thanks, Matt. You are right that this is not the primary cause for the
hanging. I found out that the freeze issue that is affecting me is -
https://www.reddit.com/r/thinkpad/comments/4ajgjh/t460_suspend_problem_with_linux/


BTW, I noticed that the following when the backtrace as discussed in this bug 
occurs on my laptop: When I switch virtual desktops the image of the window in 
the previous desktop is shown for some time if the current desktop does not 
have any windows. This happened consistently with plasma desktop of KDE 5, I 
have not checked others.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34

[Kernel-packages] [Bug 1523088]

[Matthew-d-roper]

(In reply to Prasad H L Bhat from comment #34)
> I get the same error sometimes on my T460 laptop with Intel HD Graphics 520.
> When it occurs, it freezes the laptop completely (display turns off, no
> virtual terminals work, audio buffer keeps looping if present when freezing).

I don't think the message is the cause of your hang.  The message here
is a harmless warning that we're needlessly re-calculating something we
shouldn't be.  That's something we shouldn't be doing (and I'm in the
process of fixing), but it won't actually cause any harm or trigger a
system hang.

The WARN() here will often show up any time a modeset operation happens
while you're using multiple displays.  It sounds like something else is
going wrong for you during that modeset which does cause a hang and this
message just happens to be the last thing you wind up seeing.

Could you please open a new bugzilla describing the details of your
setup and any actions that trigger the hang for you?  It's unlikely that
fixing this message here will fix your hang, so we'll want to
investigate your report separately.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez

[Kernel-packages] [Bug 1523088]

[Prasad H L Bhat]

I get the same error sometimes on my T460 laptop with Intel HD Graphics
520. When it occurs, it freezes the laptop completely (display turns
off, no virtual terminals work, audio buffer keeps looping if present
when freezing).

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  Execu

[Kernel-packages] [Bug 1523088]

[Daniela-doras-prodan]

Assigning this to Gabriel since he is looking into the dmesg-warn tests
results on SKL in CI system.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Wer

[Kernel-packages] [Bug 1523088]

[Matthew-d-roper]

I'm pretty sure this happens because we wind up re-computing the same
watermark values for each CRTC multiple times in a single atomic
transaction (once per CRTC involved in the transaction).  I'm putting
together some patches that make SKL watermarks play more nicely with
atomic (and eliminate this unnecessary looping); I should have those
ready to post next week sometime.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.2

[Kernel-packages] [Bug 1523088]

[Aljaz Prusnik]

Happens also on a brand new XPS 15 9550 laptop. I tried also today's
kernel git (with some drm fixes for i915).

System is installed anew with Debian testing up-to-date, latest kernel
code and intel video driver 2:2.99.917+git20160218-1.

Symptoms:
- system boots (lightdm)
- laptop screen blinks like crazy, monitor picture is ok (Dell P2715Q, HDMI 
connection)
- after logging-in everything freezes - I have to turn-off computer.

What I do to make it work:
- boot without HDMI plugged-in
- after log-in, plug-in HDMI and then I have stable environment.

This is the trace I found in syslog:
[ cut here ]
WARNING: CPU: 1 PID: 77 at drivers/gpu/drm/i915/intel_pm.c:3553 
skl_update_other_pipe_wm+0x133/0x140 [i915]()
WARN_ON(!wm_changed)
Modules linked in: ebtable_filter ebtables ip6table_filter ip6_tables 
iptable_filter ip_tables x_tables snd_hda_codec_hdmi dell_led 
snd_hda_codec_realtek snd_hda_codec_generic bbswitch(O) intel_rapl 
x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass 
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel jitterentropy_rng joydev 
nls_utf8 dell_wmi nls_cp437 mxm_wmi drbg snd_hda_intel vfat ansi_cprng fat 
snd_hda_codec snd_hda_core aesni_intel efi_pstore snd_hwdep aes_x86_64 lrw 
gf128mul glue_helper ablk_helper dell_laptop dcdbas snd_pcm cryptd snd_timer 
evdev pcspkr snd efivars idma64 serio_raw i2c_i801 soundcore virt_dma brcmfmac 
brcmutil cfg80211 i915 intel_gtt i2c_algo_bit mei_me drm_kms_helper mei drm 
syscopyarea sysfillrect sysimgblt fb_sys_fops intel_lpss_pci 
processor_thermal_device shpchp intel_soc_dts_iosf battery hci_uart btbcm 
btintel int3403_thermal bluetooth dell_smo8800 wmi video rfkill intel_lpss_acpi 
intel_lpss int3400_thermal int3402_thermal tpm_tis int34
 0x_thermal_zone acpi_thermal_rel ac acpi_pad tpm intel_hid button processor 
ecryptfs cbc sha256_ssse3 sha256_generic hmac encrypted_keys parport_pc ppdev 
lp parport efivarfs autofs4 ext4 crc16 mbcache jbd2 rtsx_pci_sdmmc mmc_core 
crc32c_intel psmouse ahci libahci xhci_pci libata rtsx_pci nvme xhci_hcd 
mfd_core scsi_mod usbcore usb_common fan thermal i2c_hid hid
CPU: 1 PID: 77 Comm: kworker/u16:1 Tainted: G   O4.5.0-rc5+ #3
Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.01.19 01/25/2016
Workqueue: events_unbound async_run_entry_fn
 0286 55a2a6f3 812e5b13 88089825b7f8
 a06617d0 8105d93d 88089aa12000 88089825b850
 88089a2f9bd4 88089abf3000 88089abf33a8 8105d9cc
Call Trace:
 [] ? dump_stack+0x5c/0x79
 [] ? warn_slowpath_common+0x7d/0xb0
 [] ? warn_slowpath_fmt+0x5c/0x80
 [] ? skl_update_other_pipe_wm+0x133/0x140 [i915]
 [] ? skl_update_wm+0x165/0x5a0 [i915]
 [] ? _raw_spin_unlock_irqrestore+0x20/0x40
 [] ? intel_ddi_enable_transcoder_func+0x17c/0x260 [i915]
 [] ? haswell_crtc_enable+0x308/0x880 [i915]
 [] ? _raw_spin_unlock_irqrestore+0x20/0x40
 [] ? intel_atomic_commit+0x6d2/0x16c0 [i915]
 [] ? drm_atomic_check_only+0x185/0x600 [drm]
 [] ? drm_atomic_add_affected_connectors+0x22/0xe0 [drm]
 [] ? restore_fbdev_mode+0x223/0x250 [drm_kms_helper]
 [] ? drm_fb_helper_restore_fbdev_mode_unlocked+0x2e/0x70 
[drm_kms_helper]
 [] ? drm_fb_helper_set_par+0x29/0x50 [drm_kms_helper]
 [] ? intel_fbdev_set_par+0x16/0x60 [i915]
 [] ? fbcon_init+0x54d/0x5e0
 [] ? visual_init+0xc3/0x120
 [] ? do_bind_con_driver+0x1e3/0x3d0
 [] ? do_take_over_console+0x13b/0x190
 [] ? do_fbcon_takeover+0x53/0xb0
 [] ? notifier_call_chain+0x45/0x70
 [] ? __blocking_notifier_call_chain+0x41/0x60
 [] ? register_framebuffer+0x20f/0x360
 [] ? vga_switcheroo_client_fb_set+0x19/0x70
 [] ? drm_fb_helper_initial_config+0x298/0x420 
[drm_kms_helper]
 [] ? intel_fbdev_initial_config+0x1b/0x30 [i915]
 [] ? async_run_entry_fn+0x45/0x130
 [] ? process_one_work+0x151/0x430
 [] ? worker_thread+0x4a/0x460
 [] ? process_one_work+0x430/0x430
 [] ? kthread+0xcd/0xf0
 [] ? kthread_worker_fn+0x150/0x150
 [] ? ret_from_fork+0x3f/0x70
 [] ? kthread_worker_fn+0x150/0x150
---[ end trace f9c041c4b6f1a3ff ]---

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 1

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Bug Watch Updater]

** Changed in: xorg-server
   Status: Fix Released => Confirmed

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)

[Kernel-packages] [Bug 1523088]

[Phil-cole]

I believe I am experiencing this issue also. Dell Optiplex 7040 with
Intel I7-6700 (skylake) with integrated graphics (Intel HD 530) running
Ubuntu 14.04.3 LTS.

Two monitors are connected via displayport cables. Issue also occurred
when using displayport to DVI adapters.

The following is logged to /var/log/syslog every time I move the mouse
cursor between screens. Occasionally when I move the mouse cursor to the
other screen, the screen will blank and then a few seconds later come
back on. Windows are not re-arranged (implying it is not the
disappearance of a screen), and similar log entries are produced. No
other rendering issues or graphics issues have been noted - Unity works
fine. Running tuxracer does not cause any issues.

If there is any additional information I can provide that would be
helpful please let me know.

Feb  9 10:07:56 computer-name kernel: [595457.353689] [ cut here 
]
Feb  9 10:07:56 computer-name kernel: [595457.353710] WARNING: CPU: 4 PID: 1929 
at 
/build/linux-lts-vivid-LIqOuh/linux-lts-vivid-3.19.0/ubuntu/i915/intel_pm.c:3406
 skl_update_other_pipe_wm+0x210/0x220 [i915_bpo]()
Feb  9 10:07:56 computer-name kernel: [595457.353711] WARN_ON(!wm_changed)
Feb  9 10:07:56 computer-name kernel: [595457.353712] Modules linked in: 
snd_seq_dummy cuse uas usb_storage vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) 
vboxdrv(OE) xt_conntrack ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat 
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter 
ip_tables x_tables nf_nat nf_conntrack br_netfilter bridge stp llc aufs 
pci_stub rfcomm bnep bluetooth binfmt_misc twofish_generic twofish_avx_x86_64 
twofish_x86_64_3way twofish_x86_64 twofish_common xts snd_hda_codec_hdmi 
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_controller 
snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi 
joydev snd_seq snd_seq_device x86_pkg_temp_thermal coretemp snd_timer dell_wmi 
sparse_keymap kvm_intel dcdbas kvm snd serio_raw soundcore 8250_fintek i2c_hid 
mac_hid acpi_pad i915_bpo intel_ips drm_kms_helper drm i2c_algo_bit shpchp 
parport_pc ppdev lp parport nls_iso8859_1 dm_crypt hid_generic usbhid hid 
crct10dif_pclmul c
 rc32_pclmul aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd 
e1000e psmouse ptp ahci pps_core nvme libahci wmi video [last unloaded: vboxdrv]
Feb  9 10:07:56 computer-name kernel: [595457.353749] CPU: 4 PID: 1929 Comm: 
Xorg Tainted: GW  OE  3.19.0-49-generic #55~14.04.1-Ubuntu
Feb  9 10:07:56 computer-name kernel: [595457.353750] Hardware name: Dell Inc. 
OptiPlex 7040/0Y7WYT, BIOS 1.0.1 09/01/2015
Feb  9 10:07:56 computer-name kernel: [595457.353751]  c05f4268 
88045cbb7598 817b01b5 
Feb  9 10:07:56 computer-name kernel: [595457.353753]  88045cbb75e8 
88045cbb75d8 81074dea 88045cbb7710
Feb  9 10:07:56 computer-name kernel: [595457.353755]  88045f18b000 
88045cbb7680 88045cbb7734 88045f18d000
Feb  9 10:07:56 computer-name kernel: [595457.353757] Call Trace:
Feb  9 10:07:56 computer-name kernel: [595457.353762]  [] 
dump_stack+0x45/0x57
Feb  9 10:07:56 computer-name kernel: [595457.353765]  [] 
warn_slowpath_common+0x8a/0xc0
Feb  9 10:07:56 computer-name kernel: [595457.353767]  [] 
warn_slowpath_fmt+0x46/0x50
Feb  9 10:07:56 computer-name kernel: [595457.353775]  [] 
skl_update_other_pipe_wm+0x210/0x220 [i915_bpo]
Feb  9 10:07:56 computer-name kernel: [595457.353784]  [] 
skl_update_wm+0x205/0x850 [i915_bpo]
Feb  9 10:07:56 computer-name kernel: [595457.353797]  [] ? 
gen9_read32+0x6e/0x2f0 [i915_bpo]
Feb  9 10:07:56 computer-name kernel: [595457.353806]  [] 
intel_update_watermarks+0x1e/0x30 [i915_bpo]
Feb  9 10:07:56 computer-name kernel: [595457.353820]  [] 
intel_finish_crtc_commit+0x190/0x1b0 [i915_bpo]
Feb  9 10:07:56 computer-name kernel: [595457.353827]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x169/0x240 [drm_kms_helper]
Feb  9 10:07:56 computer-name kernel: [595457.353842]  [] 
intel_atomic_commit+0x68/0x100 [i915_bpo]
Feb  9 10:07:56 computer-name kernel: [595457.353853]  [] 
drm_atomic_commit+0x37/0x60 [drm]
Feb  9 10:07:56 computer-name kernel: [595457.353859]  [] 
drm_atomic_helper_disable_plane+0xf5/0x140 [drm_kms_helper]
Feb  9 10:07:56 computer-name kernel: [595457.353862]  [] ? 
mutex_optimistic_spin+0x139/0x1f0
Feb  9 10:07:56 computer-name kernel: [595457.353870]  [] 
__setplane_internal+0x1d0/0x2c0 [drm]
Feb  9 10:07:56 computer-name kernel: [595457.353873]  [] ? 
__ww_mutex_lock_slowpath+0x152/0x16c
Feb  9 10:07:56 computer-name kernel: [595457.353880]  [] 
drm_mode_cursor_universal+0x11c/0x200 [drm]
Feb  9 10:07:56 computer-name kernel: [595457.353882]  [] ? 
__ww_mutex_lock+0x5f/0x97
Feb  9 10:07:56 computer-name kernel: [595457.353889]  [] 
drm_mode_cursor_common+0x7c/0x1b0 [drm]
Feb  9 10:07:56 computer-name kernel: [595457.353892]  [] ? 
__sigqueue_free.part.12+0x37/0x40
Feb  9 10:07:56 

[Kernel-packages] [Bug 1523088]

[Paulo Zanoni]

Just for the record: I can also reproduce this bug reliably. Feel free
to ping me if you need any sort of information, debug or quick patch
testing.

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days a

[Kernel-packages] [Bug 1523088]

[Cezar-burlacu]

Created attachment 121513
dmesg, xrandr, vbios, intel reg dump

This bug is still reproducing on my machine:
Distro: Ubuntu 16.04
CPU: Intel(R) Core(TM) i7-6700K
MB: Asus Z170-A
kernel: affb4fed39e6ec65cd44f102624885bc97fbfd70 drm-intel-nightly: 
2016y-02m-04d-09h-08m-18s UTC integration manifest

This is reproducing always on boot only when I have 2 monitors (both HP
EliteDisplay E241i) and only if one of them has a DP connector.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Christopher M. Penalver]

Lars Magnus Herland, it will help immensely if you filed a new report with the 
Ubuntu repository kernel (not mainline/upstream) via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

For more on why this is helpful, please see
https://wiki.ubuntu.com/ReportingBugs.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Fix Released
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Lars Magnus Herland]

4.2.0-27-generic #32-Ubuntu SMP Fri Jan 22 04:49:08 UTC 2016 x86_64
x86_64 x86_64 GNU/Linux

I have the same issue and it comes every 2-5 minutes

Jan 23 11:56:59 zhakal kernel: [  212.683811] WARNING: CPU: 6 PID: 1446 at 
/build/linux-NgsOGa/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
Jan 23 11:56:59 zhakal kernel: [  212.683812] WARN_ON(!wm_changed)
Jan 23 11:56:59 zhakal kernel: [  212.683813] Modules linked in: 
ip6table_filter ip6_tables iptable_filter ip_tables x_tables pci_stub 
vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) rpcsec_gss_krb5 nfsv4 
nfsv3 nfs fscache joydev input_leds zram lz4_compress snd_hda_codec_hdmi 
uvcvideo snd_hda_codec_realtek videobuf2_vmalloc snd_hda_codec_generic 
videobuf2_memops videobuf2_core v4l2_common videodev snd_usb_audio media 
snd_usbmidi_lib snd_hda_intel hid_generic snd_hda_codec intel_rapl snd_hda_core 
x86_pkg_temp_thermal snd_hwdep intel_powerclamp snd_pcm coretemp eeepc_wmi 
asus_wmi sparse_keymap kvm snd_seq_midi snd_seq_midi_event snd_rawmidi 
crct10dif_pclmul crc32_pclmul snd_seq usbhid snd_seq_device aesni_intel 
snd_timer aes_x86_64 snd lrw gf128mul soundcore glue_helper ablk_helper cryptd 
serio_raw shpchp mei_me mei acpi_als kfifo_buf 8250_fintek intel_lpss_acpi 
intel_lpss industrialio mac_hid acpi_pad nfsd auth_rpcgss nfs_acl lockd grace 
sunrpc parport_pc ppdev lp parport autof
 s4 mxm_wmi i915 e1000e i2c_algo_bit psmouse drm_kms_helper ptp pps_core drm 
ahci libahci wmi video pinctrl_sunrisepoint i2c_hid pinctrl_intel hid
Jan 23 11:56:59 zhakal kernel: [  212.683869] CPU: 6 PID: 1446 Comm: Xorg 
Tainted: GW  OE   4.2.0-27-generic #32-Ubuntu
Jan 23 11:56:59 zhakal kernel: [  212.683870] Hardware name: System 
manufacturer System Product Name/Z170 PRO GAMING, BIOS 1202 12/25/2015
Jan 23 11:56:59 zhakal kernel: [  212.683871]   
138afa90 880425d6b518 817eae99
Jan 23 11:56:59 zhakal kernel: [  212.683872]   
880425d6b570 880425d6b558 8107b9c6
Jan 23 11:56:59 zhakal kernel: [  212.683874]  880425d6b620 
880425d6b6c4 880422d63000 880422d62000
Jan 23 11:56:59 zhakal kernel: [  212.683875] Call Trace:
Jan 23 11:56:59 zhakal kernel: [  212.683881]  [] 
dump_stack+0x45/0x57
Jan 23 11:56:59 zhakal kernel: [  212.683885]  [] 
warn_slowpath_common+0x86/0xc0
Jan 23 11:56:59 zhakal kernel: [  212.683886]  [] 
warn_slowpath_fmt+0x55/0x70
Jan 23 11:56:59 zhakal kernel: [  212.683893]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
Jan 23 11:56:59 zhakal kernel: [  212.683898]  [] 
skl_update_wm+0x1bb/0x740 [i915]
Jan 23 11:56:59 zhakal kernel: [  212.683913]  [] ? 
gen9_read32+0xf7/0x2d0 [i915]
Jan 23 11:56:59 zhakal kernel: [  212.683920]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
Jan 23 11:56:59 zhakal kernel: [  212.683927]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
Jan 23 11:56:59 zhakal kernel: [  212.683938]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
Jan 23 11:56:59 zhakal kernel: [  212.683945]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
Jan 23 11:56:59 zhakal kernel: [  212.683956]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
Jan 23 11:56:59 zhakal kernel: [  212.683977]  [] 
drm_atomic_commit+0x37/0x60 [drm]
Jan 23 11:56:59 zhakal kernel: [  212.683980]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
Jan 23 11:56:59 zhakal kernel: [  212.683986]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
Jan 23 11:56:59 zhakal kernel: [  212.683991]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
Jan 23 11:56:59 zhakal kernel: [  212.683993]  [] ? 
__ww_mutex_lock+0x5f/0xa0
Jan 23 11:56:59 zhakal kernel: [  212.683997]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
Jan 23 11:56:59 zhakal kernel: [  212.684005]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
Jan 23 11:56:59 zhakal kernel: [  212.684009]  [] 
drm_ioctl+0x125/0x610 [drm]
Jan 23 11:56:59 zhakal kernel: [  212.684014]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
Jan 23 11:56:59 zhakal kernel: [  212.684018]  [] 
do_vfs_ioctl+0x295/0x480
Jan 23 11:56:59 zhakal kernel: [  212.684020]  [] ? 
__vfs_read+0x18/0x40
Jan 23 11:56:59 zhakal kernel: [  212.684021]  [] ? 
vfs_read+0x87/0x130
Jan 23 11:56:59 zhakal kernel: [  212.684023]  [] 
SyS_ioctl+0x79/0x90
Jan 23 11:56:59 zhakal kernel: [  212.684024]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
Jan 23 11:56:59 zhakal kernel: [  212.684025] ---[ end trace 42acdfd8c91b2799 
]---
Jan 23 11:57:31 zhakal kernel: [  244.265189] [ cut here 
]

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Fix Released
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  b

[Kernel-packages] [Bug 1523088] Re: WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Christopher M. Penalver]

dan, thank you for taking the time to report this bug and helping to make 
Ubuntu better. Please execute the following command only once, as it will 
automatically gather debugging information, in a terminal:
apport-collect 1523088

** Package changed: xorg-server (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Status: Confirmed => Incomplete

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Fix Released
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE 
  4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]   a287b8f0 
880071b03518 817e93f9
  [Sam Dez  5 12:34:46 2015]   880071b03570 
880071b03558 8107b3d6
  [Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 
880279bf2000 880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [] 
warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 
[i915]
  [Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [] ? 
drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [] ? 
__set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.

[Kernel-packages] [Bug 1523088] [NEW] WARN_ON(!wm_changed) warning and stacktrace in kernel log

[Launchpad Bug Tracker]

You have been subscribed to a public bug:

I always get an warning and stacktrace (and it seems to hang a little
bit). This occurs after reboot as well as when I move with the cursor
between my hdmi monitor and my laptop. (This only occurs when HDMI is
connected)

Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
Processor: i5 6300hq
Graphics: gtx950m

WARNING: CPU: 1 PID: 827 at 
/build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
[Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
[Sam Dez  5 12:34:46 2015] Modules linked in:
[Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) 
vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms 
memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap 
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel 
snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal 
intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw 
gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci 
ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 
joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei 
videobuf2_core v4l2_common intel_lpss_pci videodev media
[Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp 
dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid 
rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit 
drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint 
video pinctrl_intel
[Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: GW  OE   
4.2.0-19-generic #23-Ubuntu
[Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS 
V1.03 10/23/2015
[Sam Dez  5 12:34:46 2015]   a287b8f0 880071b03518 
817e93f9
[Sam Dez  5 12:34:46 2015]   880071b03570 880071b03558 
8107b3d6
[Sam Dez  5 12:34:46 2015]  880071b03620 880071b036c4 880279bf2000 
880279bf7000
[Sam Dez  5 12:34:46 2015] Call Trace:
[Sam Dez  5 12:34:46 2015]  [] dump_stack+0x45/0x57
[Sam Dez  5 12:34:46 2015]  [] warn_slowpath_common+0x86/0xc0
[Sam Dez  5 12:34:46 2015]  [] warn_slowpath_fmt+0x55/0x70
[Sam Dez  5 12:34:46 2015]  [] 
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
[Sam Dez  5 12:34:46 2015]  [] skl_update_wm+0x1bb/0x740 
[i915]
[Sam Dez  5 12:34:46 2015]  [] ? gen9_read32+0xf7/0x2d0 [i915]
[Sam Dez  5 12:34:46 2015]  [] ? 
i915_get_vblank_timestamp+0x62/0xa0 [i915]
[Sam Dez  5 12:34:46 2015]  [] 
intel_update_watermarks+0x1e/0x30 [i915]
[Sam Dez  5 12:34:46 2015]  [] 
intel_finish_crtc_commit+0x169/0x190 [i915]
[Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
[Sam Dez  5 12:34:46 2015]  [] intel_atomic_commit+0x6b/0x100 
[i915]
[Sam Dez  5 12:34:46 2015]  [] drm_atomic_commit+0x37/0x60 
[drm]
[Sam Dez  5 12:34:46 2015]  [] 
drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
[Sam Dez  5 12:34:46 2015]  [] 
__setplane_internal+0x23a/0x2f0 [drm]
[Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_universal+0x12b/0x210 [drm]
[Sam Dez  5 12:34:46 2015]  [] ? __ww_mutex_lock+0x5f/0xa0
[Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_common+0x81/0x180 [drm]
[Sam Dez  5 12:34:46 2015]  [] 
drm_mode_cursor_ioctl+0x50/0x70 [drm]
[Sam Dez  5 12:34:46 2015]  [] drm_ioctl+0x125/0x610 [drm]
[Sam Dez  5 12:34:46 2015]  [] ? drm_mode_setcrtc+0x500/0x500 
[drm]
[Sam Dez  5 12:34:46 2015]  [] do_vfs_ioctl+0x295/0x480
[Sam Dez  5 12:34:46 2015]  [] ? __set_task_blocked+0x41/0xa0
[Sam Dez  5 12:34:46 2015]  [] SyS_ioctl+0x79/0x90
[Sam Dez  5 12:34:46 2015]  [] 
entry_SYSCALL_64_fastpath+0x16/0x75
[Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
Uname: Linux 4.2.0-19-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Sat Dec  5 12:35:24 2015
ExecutablePath: /usr/bin/Xorg
InstallationDate: Installed on 2015-12-04 (0 days ago)
InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: xorg-server
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: xorg-server
 Importance: High
 Status: Fix Released

** Affects: linux (Ubuntu)
 Importance: Medium
 Status: Incomplete


** Tags: amd64 apport-bug wily
-- 
WARN_ON(!wm_changed) warning and stacktrace in kernel log
https://bugs.launchpad.net/bugs/1523088
You received this bug notification because you are a member of Kernel Packages, 
which is s