https://bugs.kde.org/show_bug.cgi?id=480092
Bug ID: 480092
Summary: Task Switcher with Thumbnail Grid / preview crashes
Kwin when compositor is turned off
Classification: Plasma
Product: kwin
Version: 5.90.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Keywords: qt6
Severity: crash
Priority: NOR
Component: effects-window-management
Assignee: kwin-bugs-n...@kde.org
Reporter: tro...@troplo.com
Target Milestone: ---
Flags: X11+, NVIDIA+
Created attachment 165072
--> https://bugs.kde.org/attachment.cgi?id=165072&action=edit
Crash log of kwin_x11
SUMMARY
When disabling the compositor with CTRL + SHIFT + F12, the task switcher is
expected to fallback to icon-only mode as it did in Plasma 5, instead it must
attempt to render the thumbnails which are unavailable with the compositor
disabled causing the entire shell to crash and restart with the compositor
re-enabled. I've been using Large Icons instead as my primary task switcher to
circumvent this issue.
NVIDIA 545.29.06 on X11, Plasma 6 RC1 (Arch Linux)
STEPS TO REPRODUCE
1. Enable Thumbnail Grid or another switcher which shows thumbnails
2. Disable compositor
3. Watch the entire shell crash
OBSERVED RESULT
The shell crashes
EXPECTED RESULT
The switcher falls back to application icons instead of attempting to render
preview
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.7.0-zen3-1-zen
KDE Plasma Version: 5.92.0
KDE Frameworks Version: 5.248.0
Qt Version: 6.7.0
ADDITIONAL INFORMATION
Crash log attached.
Video: https://i.troplo.com/i/3df5da04065d.mp4
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