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  • Bug#1099987: UI freezing

    From Stephan =?ISO-8859-1?Q?Verb=FCcheln@21:1/5 to All on Sun Mar 9 23:10:01 2025
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    Package: gnome-shell
    Version: 48~rc-2

    Since I installed gnome-shell 48~rc-2, the UI keeps freezing. This
    happens multiple times per hour during regular use. The whole display
    including cursor and clock are frozen.

    Audio playback is continuing during the freeze. Capslock LED is still
    reacting to capslock keystrokes. Bluetooth headphones can be used to
    pause and continue playback.

    After suspend (closing and opening the lid), the freeze is gone.
    Sometimes the app switcher (Alt+Tab) is showing “on top” of the lock
    screen after suspend and resume.

    Unfortunately, I was not able do identify a root cause yet. I cannot
    link it to any specific activity (e.g. 3D rendering). It happens during
    normal usage with Nautilus, Terminal, Firefox and Evolution.

    journalctl (user or root) and dmesg do not show many messages that give
    a hint. I suspect the issue being related to gnome-shell because I did
    not update any kernel or video related packages recently. I updated
    various other Gnome 48 packages at the same time, but nothing else.

    CPU: 13th Gen Intel(R) Core(TM) i7-1370P
    Graphics: Intel Corporation Raptor Lake-P [Iris Xe Graphics] (rev 04)

    Regards
    Stephan

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  • From Simon McVittie@21:1/5 to All on Mon Mar 10 00:30:01 2025
    Control: reassign -1 src:mutter 48~rc-2
    Control: forcemerge 1099743 -1
    Control: affects 1099743 + src:gnome-shell
    Control: forwarded 1099743 https://gitlab.gnome.org/GNOME/mutter/-/issues/3959

    On Sun, 09 Mar 2025 at 22:00:44 +0000, Stephan Verbcheln wrote:
    Since I installed gnome-shell 48~rc-2, the UI keeps freezing. This
    happens multiple times per hour during regular use. The whole display >including cursor and clock are frozen.
    ...
    After suspend (closing and opening the lid), the freeze is gone.

    If it's the same thing I'm seeing (seems likely), VT switching
    (Ctrl+Alt+F6 Ctrl+Alt+F2) also seems to be a workaround.

    I'm also wondering whether this is related to an issue my partner has
    been seeing occasionally on bookworm, where the UI sometimes freezes
    (but much more rarely than we're seeing in unstable) and, again, can be
    unstuck by VT switching. If it's the same thing, then having it happen
    more often in unstable is actually a good thing, because it means the harder-to-reproduce version in bookworm might finally get resolved in
    trixie.

    On Sun, 09 Mar 2025 at 22:08:18 +0000, Stephan Verbcheln wrote:
    It appears to be the same bug as 1099743. Sorry for duplicate.

    Please try the version of libmutter-16-0 (and other packages from
    src:mutter) from experimental? It includes an upstream merge request
    (not reviewed by upstream yet) which I'm hoping will resolve the issue.

    It's difficult to say for sure "this is fixed" when it's an intermittent
    issue that can happen after a few minutes or a few hours, so feedback is
    useful here (especially since the possible solution is a change that has
    not yet been reviewed or merged upstream).

    smcv

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