Resuming from suspend on Lenovo ThinkPad X1 Carbon 4th gen does not work reliably

[Mikko Kortelainen]

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 <email address hidden>
[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 <email address hidden>

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

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc4-wily/

[Mikko Kortelainen (kortsi)]

I just bought the machine a couple of days ago and installed Xenial straight away so I havent' had a working kernel on this.

I was thinking about installing a mainline build earlier but did not get to it. Then I discovered that the battery life on this thing is pretty amazing. I can use it through the whole day without charging even with suspend disabled.

But I'll test the mainline build and report back.

[Mikko Kortelainen (kortsi)]

I tested with:

4.6.0-040600rc4-generic #201604172330 SMP Mon Apr 18 03:32:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

I can confirm that this one does not hang during resume after trying about ten times.

Two times out of 10 I got this in dmesg:

[ 77.422675] ------------[ cut here ]------------
[ 77.422733] WARNING: CPU: 0 PID: 2141 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_uncore.c:649 __unclaimed_reg_debug+0x80/0x90 [i915]
[ 77.422735] Unclaimed register detected after reading register 0x65f10
[ 77.422789] Modules linked in: drbg ansi_cprng ctr ccm msr bnep binfmt_misc dm_crypt arc4 intel_rapl x86_pkg_temp_thermal snd_soc_skl acer_wmi intel_powerclamp sparse_keymap coretemp kvm_intel snd_soc_skl_ipc snd_soc_sst_ipc kvm snd_soc_sst_dsp irqbypass snd_hda_codec_hdmi snd_hda_ext_core snd_soc_sst_match crct10dif_pclmul snd_soc_core crc32_pclmul ghash_clmulni_intel iwlmvm snd_hda_codec_conexant aesni_intel snd_hda_codec_generic mac80211 snd_compress ac97_bus aes_x86_64 lrw gf128mul glue_helper snd_pcm_dmaengine ablk_helper dw_dmac_core cryptd snd_hda_intel iwlwifi snd_hda_codec input_leds joydev snd_hda_core snd_hwdep serio_raw uvcvideo cdc_mbim cdc_wdm videobuf2_vmalloc videobuf2_memops qcserial cdc_ncm snd_pcm videobuf2_v4l2 usbnet usb_wwan videobuf2_core mii videodev usbserial rtsx_pci_ms
[ 77.422824] cfg80211 media memstick btusb btrtl btbcm btintel bluetooth thinkpad_acpi nvram snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq mei_me mei shpchp snd_seq_device intel_pch_thermal snd_timer snd soundcore mac_hid parport_pc ppdev lp parport autofs4 i915 i2c_algo_bit drm_kms_helper rtsx_pci_sdmmc e1000e syscopyarea sysfillrect ptp sysimgblt psmouse fb_sys_fops pps_core ahci rtsx_pci drm libahci wmi video fjes
[ 77.422828] CPU: 0 PID: 2141 Comm: kworker/u16:6 Not tainted 4.6.0-040600rc4-generic #201604172330
[ 77.422830] Hardware name: LENOVO 20FB003PMS/20FB003PMS, BIOS N1FET37W (1.11 ) 03/15/2016
[ 77.422839] Workqueue: events_unbound async_run_entry_fn
[ 77.422844] 0000000000000086 000000003e1632fd ffff880089e47a58 ffffffff813eee03
[ 77.422848] ffff880089e47aa8 0000000000000000 ffff880089e47a98 ffffffff810827cb
[ 77.422851] 0000028989e47a78 0000000000000000 0000000000000001 0000000000065f10
[ 77.422852] Call Trace:
[ 77.422862] [<ffffffff813eee03>] dump_stack+0x63/0x90
[ 77.422867] [<ffffffff810827cb>] __warn+0xcb/0xf0
[ 77.422871] [<ffffffff8108284f>] warn_slowpath_fmt+0x5f/0x80
[ 77.422915] [<ffffffffc01e6db0>] __unclaimed_reg_debug+0x80/0x90 [i915]
[ 77.422953] [<ffffffffc01ec85b>] gen9_read32+0x35b/0x390 [i915]
[ 77.422996] [<ffffffffc01f2dd9>] i915_audio_component_codec_wake_override+0x39/0xb0 [i915]
[ 77.423008] [<ffffffffc061aa8f>] snd_hdac_set_codec_wakeup+0x3f/0xa0 [snd_hda_core]
[ 77.423014] [<ffffffffc037b0b4>] azx_runtime_resume+0x184/0x1a0 [snd_hda_intel]
[ 77.423019] [<ffffffff8144175b>] pci_pm_runtime_resume+0x7b/0xa0
[ 77.423025] [<ffffffff81562303>] __rpm_callback+0x33/0x70
[ 77.423029] [<ffffffff814416e0>] ? pci_restore_standard_config+0x40/0x40
[ 77.423033] [<ffffffff81562364>] rpm_callback+0x24/0x80
[ 77.423037] [<ffffffff814416e0>] ? pci_restore...

[Tomislav (hefest)]

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.

[Jorge Avarias (javarias)]

I am having similar kernel message in a HP XW9400 workstation.

I have no machine freezes and until now I can still use the machine.

[159882.429604] ------------[ cut here ]------------
[159882.429623] WARNING: CPU: 6 PID: 22042 at /build/linux-0XAgc4/linux-4.4.0/mm/rmap.c:231 unlink_anon_vmas+0x1da/0x1f0()
[159882.429625] Modules linked in: veth ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip6table_filter ip6_tables xt_CHECKSUM iptable_mangle xt_comment xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables unix_diag tcp_diag inet_diag nvram video msr binfmt_misc input_leds snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device hp_wmi nvidia_uvm(POE) sparse_keymap snd_timer snd amd64_edac_mod kvm_amd edac_mce_amd edac_core kvm wmi shpchp soundcore 8250_fintek i2c_nforce2 k10temp serio_raw irqbypass mac_hid
[159882.429674] ppdev lp parport autofs4 btrfs xor raid6_pq hid_generic usbhid hid nvidia_drm(POE) nvidia_modeset(POE) nvidia(POE) drm_kms_helper syscopyarea sysfillrect mptsas sysimgblt mptscsih fb_sys_fops mptbase drm psmouse pata_acpi scsi_transport_sas firewire_ohci firewire_core forcedeth crc_itu_t sata_nv pata_amd fjes [last unloaded: cpuid]
[159882.429700] CPU: 6 PID: 22042 Comm: git-svn Tainted: P OE 4.4.0-78-generic #99-Ubuntu
[159882.429703] Hardware name: Hewlett-Packard HP xw9400 Workstation/0A1Ch, BIOS 786D6 v04.02 04/21/2009
[159882.429706] 0000000000000286 00000000acc8e888 ffff88076ca03ba8 ffffffff813f8dd3
[159882.429709] 0000000000000000 ffffffff81cd3a70 ffff88076ca03be0 ffffffff81081302
[159882.429711] ffff88069e8c3300 ffff880042755d70 ffff8800cb21ee78 ffff8800cb21ee88
[159882.429714] Call Trace:
[159882.429723] [<ffffffff813f8dd3>] dump_stack+0x63/0x90
[159882.429728] [<ffffffff81081302>] warn_slowpath_common+0x82/0xc0
[159882.429731] [<ffffffff8108144a>] warn_slowpath_null+0x1a/0x20
[159882.429734] [<ffffffff811cdc7a>] unlink_anon_vmas+0x1da/0x1f0
[159882.429739] [<ffffffff811bf411>] free_pgtables+0xa1/0x120
[159882.429742] [<ffffffff811ca011>] exit_mmap+0xc1/0x170
[159882.429745] [<ffffffff8107e0d7>] mmput+0x57/0x130
[159882.429750] [<ffffffff81216284>] flush_old_exec+0x614/0x8d0
[159882.429755] [<ffffffff8126a969>] load_elf_binary+0x359/0x1170
[159882.429762] [<ffffffffc01ec064>] ? load_misc_binary+0x64/0x3f0 [binfmt_misc]
[159882.429765] [<ffffffff81271417>] ? get_acl+0x17/0x60
[159882.429769] [<ffffffff8121558e>] search_binary_handler+0x9e/0x1d0
[159882.429772] [<ffffffff81216d24>] do_execveat_common.isra.33+0x554/0x740
[159882.429775] [<ffffffff8121716a>] SyS_execve+0x3a/0x50
[159882.429780] [<ffffffff81840cd5>] stub_execve+0x5/0x5
[159882.429783] [<ffffffff81840a32>] ? entry_SYSCALL_64_fastpath+0x16/0x71
[159882.429786] ---[ end trace e9e562cba7ac90a1 ]---

[159882.714222] ------------[ cut here ]------------
[159882.714234] kernel BUG at /build/linux-0XAgc4/linux-4.4.0/mm/rmap.c:4...