https://bugs.kde.org/show_bug.cgi?id=495169
Bug ID: 495169
Summary: kwin_x11 sometimes stops bubbling inputs after
interacting with Steam window
Classification: Plasma
Product: kwin
Version: 6.1.5
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: input
Assignee: kwin-bugs-n...@kde.org
Reporter: triffid.hun...@gmail.com
CC: duha.b...@gmail.com
Target Milestone: ---
SUMMARY
kwin_x11 sometimes stops responding to or bubbling inputs after
moving/resizing/minimizing/restoring Steam window.
Interacting with UI elements within the Steam app don't seem to trigger the
issue.
When the issue occurs, keyboard presses and mouse clicks (incl scroll) do
nothing either within individual app windows/panels/widgets or with kwin
elements like titlebars, although it appears that apps can still perform
graphical updates since videos and animations et al continue to work normally.
It seems like dragging a window titlebar and _then_ pressing a keyboard key can
_sometimes_ cause a momentary update, but kwin then returns to the stuck state.
This erroneous state affects all windows/panels/widgets/etc on the entire
desktop, not just Steam.
Killing Steam or restarting kwin_x11 fixes things - although usually I have to
jump to a console to do this due to the nature of the issue.
Jumping to a console and returning to Xorg without poking anything does not
resolve the issue, unless Steam happens to crash due to graphics reset which it
does sometimes.
There doesn't appear to be any unusual CPU usage.
The mouse cursor still moves normally, and there's no indication that clicks
are simply going to an incorrect XY location.
STEPS TO REPRODUCE
1. Open Steam Desktop Client for Linux
2. Move/resize/minimize/restore Steam window several times
OBSERVED RESULT
kwin_x11 stops responding to key/mouse input events properly, and does not pass
events to app windows either.
EXPECTED RESULT
kwin_x11 continues working normally.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Gentoo Linux 2.15
KDE Plasma Version: 6.1.5
KDE Frameworks Version: 6.6.0
Qt Version: 6.7.2
ADDITIONAL INFORMATION
I'm aware that this may not be enough info to fix anything, but I'm unsure of
appropriate debugging steps that would be most helpful - feel free to ask me to
reproduce the issue and perform specific debugging tasks.
The issue seems to be reasonably easy for me to reproduce - which is kinda
frustrating when interacting with steam, but probably good for debugging.
I had a look for existing bugs, but didn't find any that seem to match.
This issue did not occur in KDE5.
Compositing is of course enabled.
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