I am seeing this behavior in 4.2.x mainline kernels on Lenovo T440s. [22758.651387] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) [22758.651398] ------------[ cut here ]------------ [22758.651445] WARNING: CPU: 0 PID: 923 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_display.c:12324 check_crtc_state+0x282/0x3f0 [i915]() [22758.651448] pipe state doesn't match! [22758.651451] Modules linked in: nls_utf8 btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c cpuid msr pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm btusb btrtl btbcm btintel uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media binfmt_misc bnep bluetooth arc4 intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul iwlmvm crc32_pclmul mac80211 ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_seq_midi snd_seq_midi_event snd_rawmidi iwlwifi snd_seq joydev input_leds serio_raw snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic cfg80211 rtsx_pci_ms thinkpad_acpi nvram snd_hda_intel memstick lpc_ich snd_hda_codec [22758.651569] snd_hda_core snd_hwdep snd_pcm mei_me shpchp mei snd_seq_device snd_timer snd soundcore mac_hid intel_smartconnect parport_pc ppdev lp parport autofs4 hid_generic usbhid hid rtsx_pci_sdmmc i915 psmouse ahci libahci rtsx_pci i2c_algo_bit e1000e drm_kms_helper drm ptp pps_core wmi video [22758.651626] CPU: 0 PID: 923 Comm: Xorg Tainted: G U W OE 4.2.1-040201-generic #201509211431 [22758.651630] Hardware name: LENOVO 20AQ006HUS/20AQ006HUS, BIOS GJET75WW (2.25 ) 03/28/2014 [22758.651635] ffffffffc0252c70 ffff88032a3477f8 ffffffff817a1f73 0000000000000000 [22758.651643] ffff88032a347848 ffff88032a347838 ffffffff8107719a ffff88032a347868 [22758.651650] ffff88032a0f8348 ffff88032a3478d0 ffff88032a0f8000 ffff88032b3f4000 [22758.651657] Call Trace: [22758.651672] [<ffffffff817a1f73>] dump_stack+0x45/0x57 [22758.651682] [<ffffffff8107719a>] warn_slowpath_common+0x8a/0xc0 [22758.651689] [<ffffffff81077216>] warn_slowpath_fmt+0x46/0x50 [22758.651733] [<ffffffffc01e6f9e>] ? intel_pipe_config_compare+0xb6e/0xcc0 [i915] [22758.651772] [<ffffffffc01e7372>] check_crtc_state+0x282/0x3f0 [i915] [22758.651822] [<ffffffffc01fa962>] intel_modeset_check_state+0x292/0x6b0 [i915] [22758.651864] [<ffffffffc01fb9aa>] intel_crtc_set_config+0x3ea/0x5a0 [i915] [22758.651900] [<ffffffffc00473e8>] drm_mode_set_config_internal+0x68/0x100 [drm] [22758.651932] [<ffffffffc004b2fd>] drm_mode_setcrtc+0xdd/0x4f0 [drm] [22758.651955] [<ffffffffc003c713>] drm_ioctl+0x363/0x680 [drm] [22758.651981] [<ffffffffc004b220>] ? drm_mode_setplane+0x1c0/0x1c0 [drm] [22758.651991] [<ffffffff811fc6cd>] do_vfs_ioctl+0x2cd/0x4b0 [22758.652000] [<ffffffff8108297f>] ? recalc_sigpending+0x1f/0x60 [22758.652007] [<ffffffff810832f2>] ? __set_task_blocked+0x32/0x70 [22758.652016] [<ffffffff81085976>] ? __set_current_blocked+0x36/0x60 [22758.652023] [<ffffffff811fc929>] SyS_ioctl+0x79/0x90 [22758.652031] [<ffffffff81085b76>] ? SyS_rt_sigprocmask+0x86/0xb0 [22758.652040] [<ffffffff817a9272>] entry_SYSCALL_64_fastpath+0x16/0x75 [22758.652046] ---[ end trace 08f9849164ba6114 ]---
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1501431 Title: Various i915 Intel display driver crashes reported on syslog To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1501431/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
