On my X1 Carbon 10th Gen, I can confirm my 'sleep state' in UEFI/BIOS is set to "Linux" - as per lenovo's instructions, and I use Xorg exlsuively - via Ubuntu Mate.

I can confirm that this mitigates the problem, but still occurs occasionally.

HTH

----- Original message -----
From: bigblackcar <email address hidden>
To: <email address hidden>
Subject: [Bug 1970957] Re: suspend problem
Date: Wednesday, 25 May 2022 8:33 PM

On my X1 Carbon I seem to have solved the issue by:
1. changing the BIOS so the Sleep State is in mode "Linux" as opposed to "Windows and Linux"
2. using Xorg instead of Wayland. -> When you log in, before inserting the password, click on the cog on the bottom right and choose the "Ubuntu on Xorg" option.

YMMV, but since I lost a day I wrote my solution here in case it helps
someone.

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https://bugs.launchpad.net/bugs/1970957

Title:
  suspend problem

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I've installed Ubuntu 22.04 on the ThinkPad E480. Suspend functions ok
  intermittently. Some times it works fine, other times the computer
  does not enter the suspend mode (the screen gets blank, but the
  machine is still running and the ThinPad led is on, and there is no
  way out... no response from keyboard or mouse... the only solution is
  to switch off manually hitting and holding the power button), other
  times the machine does not wakes up from suspension mode.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: ubuntu-release-upgrader-core 1:22.04.10
  ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
  Uname: Linux 5.15.0-27-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Apr 29 10:53:59 2022
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2022-04-24 (4 days ago)
  InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu82
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  leoca      1913 F.... pulseaudio
  CRDA: N/A
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 22.04
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2022-04-24 (4 days ago)
  InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
  MachineType: LENOVO 20KQ000EBR
  Package: linux (not installed)
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-27-generic root=UUID=1e7d6212-699d-4319-b137-8a7059545433 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 5.15.0-27.28-generic 5.15.30
  RelatedPackageVersions:
   linux-restricted-modules-5.15.0-27-generic N/A
   linux-backports-modules-5.15.0-27-generic  N/A
   linux-firmware                             20220329.git681281e4-0ubuntu1
  Tags:  jammy
  Uname: Linux 5.15.0-27-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 06/14/2018
  dmi.bios.release: 1.19
  dmi.bios.vendor: LENOVO
  dmi.bios.version: R0PET42W (1.19 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20KQ000EBR
  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.ec.firmware.release: 1.19
  dmi.modalias: dmi:bvnLENOVO:bvrR0PET42W(1.19):bd06/14/2018:br1.19:efr1.19:svnLENOVO:pn20KQ000EBR:pvrThinkPadE480:rvnLENOVO:rn20KQ000EBR:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20KQ_BU_Think_FM_ThinkPadE480:
  dmi.product.family: ThinkPad E480
  dmi.product.name: 20KQ000EBR
  dmi.product.sku: LENOVO_MT_20KQ_BU_Think_FM_ThinkPad E480
  dmi.product.version: ThinkPad E480
  dmi.sys.vendor: LENOVO

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