** Changed in: mutter (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1968040

Title:
  Blanked screen doesn't wake up after locking [drmModeAtomicCommit:
  Argument invalide] [drmModeAtomicCommit: Invalid argument]

Status in GNOME Shell:
  New
Status in Mutter:
  New
Status in mutter package in Ubuntu:
  Incomplete

Bug description:
  [ Workaround ]

  Add to /etc/environment (in Ubuntu 22.04):

    MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0

  or in Ubuntu 22.10 and later:

    MUTTER_DEBUG_FORCE_KMS_MODE=simple

  and then reboot.

  [ Original report ]

  (initially reported as a comment on bug #1965085, and split into a
  separate bug report)

  After I lock my screen and let it blank, moving the mouse or pressing
  any key on the keyboard won't wake it up. The only reliable workaround
  I've found is to press Ctrl+Alt+F1.

  That's on a fully up-to-date jammy, my hardware is an Intel NUC with a
  single Samsung monitor connected with a standard HDMI cable. This is a
  regression that started happening yesterday (2022-04-05) if I can
  remember correctly (I do apply pending updates at least once daily).

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: gdm3 42.0-1ubuntu2
  ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30
  Uname: Linux 5.15.0-25-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu80
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Apr  6 15:19:30 2022
  InstallationDate: Installed on 2020-09-16 (566 days ago)
  InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Alpha amd64 (20200910)
  SourcePackage: gdm3
  UpgradeStatus: Upgraded to jammy on 2022-03-19 (17 days ago)

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