https://bugs.kde.org/show_bug.cgi?id=479786
Bug ID: 479786
Summary: Dragging a window to the top or bottom of the screen
when "screen edge snap zone" is set to "None" causes a
full graphical freeze
Classification: Plasma
Product: kwin
Version: 5.92.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: thefeeltr...@thefeeltrain.com
Target Milestone: ---
SUMMARY
Dragging a window to the top or bottom of the screen when "screen edge snap
zone" is set to "None" causes a full graphical freeze. Screen remains stuck
even after 5 minutes, mouse does not move, cannot change tty.
Setting "screen edge snap zone" to 1 px or higher stops the issue.
STEPS TO REPRODUCE
1. Window Behavior > Movement > Screen edge snap zone > Set to "None"
2. Drag a window with a titlebar to the top or bottom of the screen (sides seem
to be fine)
OBSERVED RESULT
Screen will freeze, does not recover without a hard reset
EXPECTED RESULT
Does not freeze.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.92.0
KDE Frameworks Version: 5.248.0
Qt Version: 6.7.0
Kernel Version: 6.7.0-zen3-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 32 × AMD Ryzen 9 7950X 16-Core Processor
Memory: 30.5 GiB of RAM
Graphics Processor: AMD Radeon RX 6800 XT
Manufacturer: ASUS
ADDITIONAL INFORMATION
Happened in QT 6.6 so it is not QT 6.7 related. The freeze is purely graphical
since SSH still works and commands run fine. It only happens with windows with
a titlebar, so borderless and GTK apps are fine. There is nothing in journalctl
and no coredump when this happens. No logs of any kind as far as I can tell.
I can provide more information if needed but I am hoping it is reproducible on
other systems so that won't be necessary.
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