I also encounter random failures resuming from suspend on 14.04
("4.4.0-64-generic #85~14.04.1-Ubuntu SMP Mon Feb 20 12:10:54 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux"). Latitude E5570, fresh install (as of a
week ago). No blinking caps lock, though.I just cycled through suspend-resume several times and it worked well, so it's intermittent. I tried to switch to the first virtual terminal (<Ctrl>-<Alt>-F1) and restart (<Ctrl>-<Alt>-<Del>) assuming it was just the screen, but nothing happened, suggesting that it's not screen- related. Haven't checked dmesg yet, though, but I will next time it happens. I also registered one "Unclaimed register detected after reading register" event in /var/log/kern.log, but I don't believe it's related as my machine froze a number of times this week, yet this event is present in kern.log only once, 5 days ago. -- 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/1570484 Title: Resuming from suspend on Lenovo ThinkPad X1 Carbon 4th gen does not work reliably Status in linux package in Ubuntu: Confirmed Bug description: Sometimes resuming results in a black screen and a blinking caps lock light, and powering off is the only option. Sometimes it does resume. After such an event I found this in dmesg: [66603.698393] BUG: unable to handle kernel NULL pointer dereference at (null) [66603.698537] IP: [<ffffffff811cb762>] unlink_anon_vmas+0x92/0x1f0 [66603.698649] PGD 0 [66603.698689] Oops: 0000 [#1] SMP [66603.698752] Modules linked in: ctr ccm rfcomm bnep binfmt_misc drbg ansi_cprng dm_crypt arc4 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm acer_wmi sparse_keymap irqbypass snd_soc_skl crct10dif_pclmul snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_codec_hdmi snd_soc_core crc32_pclmul snd_hda_codec_conexant iwlmvm snd_hda_codec_generic snd_compress mac80211 aesni_intel ac97_bus snd_pcm_dmaengine aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd dw_dmac_core iwlwifi snd_hda_intel snd_hda_codec uvcvideo videobuf2_vmalloc snd_hda_core videobuf2_memops videobuf2_v4l2 snd_hwdep videobuf2_core cdc_mbim v4l2_common input_leds joydev cdc_wdm qcserial serio_raw usb_wwan cdc_ncm videodev snd_pcm usbnet usbserial mii cfg80211 rtsx_pci_ms btusb media btrtl [66603.700162] btbcm btintel memstick thinkpad_acpi bluetooth nvram snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq mei_me mei snd_seq_device shpchp snd_timer snd soundcore mac_hid parport_pc ppdev lp parport autofs4 rtsx_pci_sdmmc i915_bpo intel_ips i2c_algo_bit e1000e psmouse drm_kms_helper ptp syscopyarea sysfillrect pps_core sysimgblt fb_sys_fops rtsx_pci drm ahci libahci wmi video fjes [66603.700853] CPU: 3 PID: 26940 Comm: systemd-udevd Not tainted 4.4.0-18-generic #34-Ubuntu [66603.700981] Hardware name: LENOVO 20FB003PMS/20FB003PMS, BIOS N1FET37W (1.11 ) 03/15/2016 [66603.701114] task: ffff88010e908ec0 ti: ffff88010fad0000 task.ti: ffff88010fad0000 [66603.701219] RIP: 0010:[<ffffffff811cb762>] [<ffffffff811cb762>] unlink_anon_vmas+0x92/0x1f0 [66603.701365] RSP: 0018:ffff88010fad3d58 EFLAGS: 00010246 [66603.701447] RAX: ffff880213cb0010 RBX: ffff880213cb0000 RCX: 0000000000000000 [66603.701559] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88010fadc000 [66603.701663] RBP: ffff88010fad3d90 R08: 0000000000000000 R09: 000000018040003e [66603.701777] R10: ffff8801f2220840 R11: ffff88010fad6f30 R12: 00007f827a65a000 [66603.701885] R13: fffffffffffffff0 R14: ffff88010fadc078 R15: 0000000000000000 [66603.701994] FS: 0000000000000000(0000) GS:ffff8802224c0000(0000) knlGS:0000000000000000 [66603.702104] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [66603.702187] CR2: 0000000000000000 CR3: 000000010fb68000 CR4: 00000000003406e0 [66603.702294] Stack: [66603.702331] ffffffff811c3fe2 ffff88010fadc000 ffff88010fadc0c8 00007f827a65a000 [66603.702467] 0000000000000000 ffff88010fad3de8 ffff88010fadc000 ffff88010fad3dd0 [66603.702596] ffffffff811bd191 0000000000000000 0000000000000000 ffff88010c11c740 [66603.702730] Call Trace: [66603.702777] [<ffffffff811c3fe2>] ? __remove_shared_vm_struct+0x32/0x40 [66603.702892] [<ffffffff811bd191>] free_pgtables+0xa1/0x120 [66603.703012] [<ffffffff811c7c51>] exit_mmap+0xc1/0x170 [66603.703090] [<ffffffff8107de07>] mmput+0x57/0x130 [66603.703165] [<ffffffff81083b3d>] do_exit+0x27d/0xae0 [66603.703248] [<ffffffff81084423>] do_group_exit+0x43/0xb0 [66603.703341] [<ffffffff810844a4>] SyS_exit_group+0x14/0x20 [66603.703427] [<ffffffff818243b2>] entry_SYSCALL_64_fastpath+0x16/0x71 [66603.703524] Code: 00 00 ad de 48 89 43 18 e8 2c 07 02 00 49 8b 45 10 49 8d 4d 10 4c 89 eb 4c 89 e2 48 83 e8 10 49 39 ce 74 43 49 89 c5 4c 8b 7b 08 <4d> 8b 27 49 39 d4 74 13 48 85 d2 0f 85 0b 01 00 00 49 8d 7c 24 [66603.704080] RIP [<ffffffff811cb762>] unlink_anon_vmas+0x92/0x1f0 [66603.704180] RSP <ffff88010fad3d58> [66603.704229] CR2: 0000000000000000 [66603.735771] ---[ end trace 4454f1c4b387baf0 ]--- [66603.735774] Fixing recursive fault but reboot is needed! Another thing that caught my eye were the following lines but they may be a separate issue: [66598.121484] thinkpad_acpi: unknown possible thermal alarm or keyboard event received [66598.121488] thinkpad_acpi: unhandled HKEY event 0x60c0 [66598.121489] thinkpad_acpi: please report the conditions when this event happened to ibm-acpi-de...@lists.sourceforge.net [66598.122040] i915_bpo 0000:00:02.0: BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment [66598.135264] thinkpad_acpi: unknown possible thermal alarm or keyboard event received [66598.135267] thinkpad_acpi: unhandled HKEY event 0x60f0 [66598.135268] thinkpad_acpi: please report the conditions when this event happened to ibm-acpi-de...@lists.sourceforge.net ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-18-generic 4.4.0-18.34 [modified: boot/vmlinuz-4.4.0-18-generic] ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6 Uname: Linux 4.4.0-18-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mkortela 1891 F.... pulseaudio CurrentDesktop: Unity Date: Thu Apr 14 19:44:26 2016 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=b5d97bd1-6a16-4736-9da1-65ed058e7e2b InstallationDate: Installed on 2016-04-13 (0 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160412) MachineType: LENOVO 20FB003PMS ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-18-generic root=/dev/mapper/rootvg-ubuntulv ro splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-18-generic N/A linux-backports-modules-4.4.0-18-generic N/A linux-firmware 1.157 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/15/2016 dmi.bios.vendor: LENOVO dmi.bios.version: N1FET37W (1.11 ) dmi.board.asset.tag: Not Available dmi.board.name: 20FB003PMS dmi.board.vendor: LENOVO dmi.board.version: SDK0J40705 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1FET37W(1.11):bd03/15/2016:svnLENOVO:pn20FB003PMS:pvrThinkPadX1Carbon4th:rvnLENOVO:rn20FB003PMS:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20FB003PMS dmi.product.version: ThinkPad X1 Carbon 4th dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1570484/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
