[Bug 1950393] Re: GDM session crashes on suspend on Ubuntu 21.10

[Vladislav K. Valtchev]

Hi Daniel,
In my understanding, the crash is not reproducible after my workaround (switching to the nvidia driver), because the nvidia-resume.service is not masked (my theory).

Therefore, I switched back to the Nouveau driver, and I reproduced the
problem and collected the system logs as you asked. Now prevboot.txt
contains the logs from a clean boot, through the session crash and ends
with a (user requested) reboot.

Just for the record, these are the steps to reproduce the bug:

 1. Install Ubuntu 21.10 on a laptop(?) with an nvidia GPU
 2. Open "Software & Updates" -> "Additional Drivers"
 3. Select the latest driver (470)
 4. Reboot
 5. Login normally on GDM
 6. Open "Software & Updates" -> "Additional Drivers"
 7. Select "Nouveau display driver" and apply the changes
 8. Reboot
 9. Login normally on GDM
10. Try to suspend the system
11. You should observe a session crash here


** Attachment added: "System journal for the previous boot, as requested in update #8"
   https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1950393/+attachment/5540130/+files/prevboot.txt

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Title:
  GDM session crashes on suspend on Ubuntu 21.10

Status in gdm3 package in Ubuntu:
  Incomplete
Status in systemd package in Ubuntu:
  Incomplete

Bug description:
  Since I started using kernel 5.13.0-20 (and 5.13.0-21) on Ubuntu
  21.10, my GDM session crashes when I try to put my laptop to standby.

  I've attached a relevant slice of the system journal that starts from
  the moment I pressed the power button, configured to trigger suspend,
  in my case.

  ProblemType: Bug
  DistroRelease: Ubuntu 21.10
  Package: xorg 1:7.7+22ubuntu2
  ProcVersionSignature: Ubuntu 5.13.0-21.21-generic 5.13.18
  Uname: Linux 5.13.0-21-generic x86_64
  ApportVersion: 2.20.11-0ubuntu71
  Architecture: amd64
  BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
  CasperMD5CheckResult: unknown
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Nov 10 00:47:13 2021
  DistUpgraded: 2021-10-16 23:05:19,206 DEBUG Running PostInstallScript: '/usr/lib/ubuntu-advantage/upgrade_lts_contract.py'
  DistroCodename: impish
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation HD Graphics 530 [8086:191b] (rev 06) (prog-if 00 [VGA controller])
     Subsystem: Lenovo HD Graphics 530 [17aa:380a]
     Subsystem: Lenovo GM107M [GeForce GTX 950M] [17aa:380b]
  InstallationDate: Installed on 2020-03-17 (602 days ago)
  InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
  MachineType: LENOVO 80RU
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-21-generic root=UUID=0e855d19-79da-402d-9586-b7bfe9a9622a ro
  SourcePackage: xorg
  Symptom: display
  Title: Xorg crash
  UpgradeStatus: Upgraded to impish on 2021-10-16 (24 days ago)
  dmi.bios.date: 08/09/2017
  dmi.bios.release: 1.61
  dmi.bios.vendor: LENOVO
  dmi.bios.version: E5CN61WW
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Lenovo ideapad 700-15ISK
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo ideapad 700-15ISK
  dmi.ec.firmware.release: 1.22
  dmi.modalias: dmi:bvnLENOVO:bvrE5CN61WW:bd08/09/2017:br1.61:efr1.22:svnLENOVO:pn80RU:pvrLenovoideapad700-15ISK:rvnLENOVO:rnLenovoideapad700-15ISK:rvrNODPK:cvnLENOVO:ct10:cvrLenovoideapad700-15ISK:skuLENOVO_MT_80RU_BU_idea_FM_Lenovoideapad700-15ISK:
  dmi.product.family: IDEAPAD
  dmi.product.name: 80RU
  dmi.product.sku: LENOVO_MT_80RU_BU_idea_FM_Lenovo ideapad 700-15ISK
  dmi.product.version: Lenovo ideapad 700-15ISK
  dmi.sys.vendor: LENOVO
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.107-8ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 21.2.2-1ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx 21.2.2-1ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.20.13-1ubuntu1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2build1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200714-1ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-1build1

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