Attempts to suspend lead to crashes and reboot attempts hang since updating to 5.3.0-40-generic (suspect interactions with Thunderbolt dock)

[Matt W.]

I am running Ubuntu 19.10 on a Lenovo Thinkpad X1 Extreme. Since the latest kernel update, plugging into my CalDigit Thunderbolt Station 3 Plus seems to often lead to bad events when later trying to suspend or shut down.

In the dmesg log, I boot the machine without the Thunderbolt dock attached, plug it in around 115, unplug it, try to suspend, but then Ubuntu crashes around 350 to 400. At this point the screen goes to black and dumps some of the "rfkill" messages seen around 360-390 to the screen . I can get to the login window by mashing Ctrl-Alt-F1 and/or Ctrl-Alt-F2 and log in again but my previous session is completely gone.

Other times, I will try to reboot or shut down but the computer will hang on the ubuntu shutdown splash screen indefinitely until I do a hard shutdown by holding down the laptop's power button.

As far as I can tell, these issues only seem to arise after unplugging the Thunderbolt dock.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-40-generic 5.3.0-40.32
ProcVersionSignature: Ubuntu 5.3.0-40.32-generic 5.3.18
Uname: Linux 5.3.0-40-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu8.4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: gdm 7450 F.... pulseaudio
                      matt 8011 F.... pulseaudio
 /dev/snd/controlC0: gdm 7450 F.... pulseaudio
                      matt 8011 F.... pulseaudio
Date: Wed Feb 26 11:25:25 2020
InstallationDate: Installed on 2019-09-04 (175 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
MachineType: LENOVO 20MGS1YW00
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-40-generic root=UUID=3a5c73f9-5be3-4590-88a9-e362d949931c ro quiet splash resume=UUID=d464672d-224c-4149-a105-3a0cad515692 vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-5.3.0-40-generic N/A
 linux-backports-modules-5.3.0-40-generic N/A
 linux-firmware 1.183.4
SourcePackage: linux
UpgradeStatus: Upgraded to eoan on 2019-10-21 (128 days ago)
dmi.bios.date: 10/28/2019
dmi.bios.vendor: LENOVO
dmi.bios.version: N2EET43W (1.25 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20MGS1YW00
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN2EET43W(1.25):bd10/28/2019:svnLENOVO:pn20MGS1YW00:pvrThinkPadX1Extreme:rvnLENOVO:rn20MGS1YW00:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Extreme
dmi.product.name: 20MGS1YW00
dmi.product.sku: LENOVO_MT_20MG_BU_Think_FM_ThinkPad X1 Extreme
dmi.product.version: ThinkPad X1 Extreme
dmi.sys.vendor: LENOVO

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.