blank screen after mutter update

[Tobias]

Hey,

running on Ubuntu 22.04.2 LTS.

I upgraded mutter:amd64 (42.5-0ubuntu1 to 42.9-0ubuntu1) and suddenly experienced the problem described here:

https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1966808
black screen and logs like in #2 of above post.

My own Logs:

Jul 12 11:35:16 xxxxxx gnome-shell[1464]: Failed to lock front buffer on /dev/dri/card0: drmModeAddFB2WithModifiers failed: Invalid argument
Jul 12 11:35:16 xxxxxx gnome-shell[1464]: Failed to lock front buffer on /dev/dri/card0: drmModeAddFB2WithModifiers failed: Invalid argument

After some investigation and finally finding the bug above here adding
MUTTER_DEBUG_USE_KMS_MODIFIERS=0
to
/etc/environment

fixed it for me. Disabling wayland via /etc/gdm3/custom.conf worked as a workaround, too.

Output of drm_info is attached.
thanks

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: mutter 42.9-0ubuntu1
ProcVersionSignature: Ubuntu 5.15.0-76.83-generic 5.15.99
Uname: Linux 5.15.0-76-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Thu Jul 13 09:09:58 2023
SourcePackage: mutter
UpgradeStatus: Upgraded to jammy on 2022-11-23 (231 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Tobias (seppeeel)]

At least one more colleague in my company just experienced the same issue after upgrading.

[Daniel van Vugt (vanvugt)]

Thanks. Merging into bug 2026887.