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[Bug 1570484] [NEW] Resuming from suspend on Lenovo X1 Carbon 4th gen does not work reliably

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Public bug reported:

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-devel@xxxxxxxxxxxxxxxxxxxxx
[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-devel@xxxxxxxxxxxxxxxxxxxxx

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

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


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1570484

Title:
  Resuming from suspend on Lenovo 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-devel@xxxxxxxxxxxxxxxxxxxxx
  [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-devel@xxxxxxxxxxxxxxxxxxxxx

  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

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