I saw on https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1441#note_1289561 that you introduced a new environment variable MUTTER_DEBUG_DISABLE_TRIPLE_BUFFERING and subscribed to jammy-proposed to try it out.
The problem does not occur since the updates! I haven't even set the environment variable. Updated packages were: 2022-03-12 10:59:50 install libadwaita-1-0:amd64 <none> 1.1~rc-1 2022-03-12 10:59:50 install gir1.2-adw-1:amd64 <none> 1.1~rc-1 2022-03-12 10:59:50 install libopengl0:amd64 <none> 1.4.0-1 2022-03-12 10:59:50 install libmutter-10-0:amd64 <none> 42~beta-1ubuntu1 2022-03-12 10:59:50 install gir1.2-mutter-10:amd64 <none> 42~beta-1ubuntu1 2022-03-12 10:59:52 install xcvt:amd64 <none> 0.1.1-3 I also installed lutris since I reproduced the bug, probably uninteresting, but mention it nevertheless due to mesa-utils. 2022-03-11 20:25:52 install fluid-soundfont-gm:all <none> 3.1-5.3 2022-03-11 20:25:53 install fluid-soundfont-gs:all <none> 3.1-5.3 2022-03-11 20:25:53 install libz-mingw-w64:all <none> 1.2.11+dfsg-3 2022-03-11 20:25:53 install libwine-development:amd64 <none> 6.0+repack-1ubuntu1 2022-03-11 20:25:58 install python3-lxml:amd64 <none> 4.8.0-1 2022-03-11 20:25:58 install python3-setproctitle:amd64 <none> 1.2.2-2 2022-03-11 20:25:58 install python3-magic:all <none> 2:0.4.24-2 2022-03-11 20:25:58 install mesa-utils:amd64 <none> 8.4.0-1build1 2022-03-11 20:25:58 install lutris:all <none> 0.5.9.1-1 2022-03-11 20:25:58 install python3-soupsieve:all <none> 2.3.1-1 2022-03-11 20:25:58 install python3-bs4:all <none> 4.10.0-2 2022-03-11 20:25:58 install python3-evdev:amd64 <none> 1.4.0+dfsg-1build1 2022-03-11 20:25:58 install python3-webencodings:all <none> 0.5.1-4 2022-03-11 20:25:58 install python3-html5lib:all <none> 1.1-3 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1964393 Title: gnome-shell crashed with assertion failure in meta_kms_update_set_power_save: !update->plane_assignments To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1964393/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
