https://bugs.kde.org/show_bug.cgi?id=440751
Bug ID: 440751
Summary: Opened windows are not getting drawn when 'Show
Desktop' is abused in a loop
Product: kwin
Version: 5.22.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: valdi...@gmail.com
Target Milestone: ---
Created attachment 140589
--> https://bugs.kde.org/attachment.cgi?id=140589&action=edit
Kde show desktop bug video demo
SUMMARY
Using 'Show Desktop' function multiple (tens) times result in all opened
windows on current desktop to not render at all. They act as they are shown on
desktop, but no elements are drawn, not even window header.
STEPS TO REPRODUCE
1. Open any graphical application, say Kate.
2. Press and hold CTRL+F12 (default 'show desktop' combination) for 10-30
seconds.
OBSERVED RESULT
Kate window is not displayed on screen while still present in task manager. You
can 'minimize' and 'restore' the window, the cursor changes its shape where
Kate text field should be shown, but the window is just not rendered: not the
content, not the WM header with title and buttons.
EXPECTED RESULT
Window is rendered as usual.
SOFTWARE/OS VERSIONS
Operating System: Fedora 34
KDE Plasma Version: 5.22.4
KDE Frameworks Version: 5.83.0
Qt Version: 5.15.2
Kernel Version: 5.13.6-200.fc34.x86_64 (64-bit)
Graphics Platform: X11
Graphics Processor: Mesa DRI Intel® HD Graphics 3000
ADDITIONAL INFORMATION
Please watch the video if the text description is confusing.
I'm not sure whether this is a kwin or plasma bug. Filing it as kwin bug (as
even window decorations are not shown), please reassign if necessary.
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