https://bugs.kde.org/show_bug.cgi?id=443951
Bug ID: 443951
Summary: 5.23.0 Has Horrible Compositing Issues - Black Boxes
and Flickering showing up
Product: kwin
Version: 5.23.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: gardotd...@gmail.com
Target Milestone: ---
Created attachment 142567
--> https://bugs.kde.org/attachment.cgi?id=142567&action=edit
output of cat /proc/`pidof kwin_x11`/maps | grep gl
SUMMARY
Only hours after updating to 5.23.0, I've noticed horrible black boxes and
flickering issues showing up. When fullscreening and un-fullscreening a video
on YouTube in Brave Browser, black boxes show up everywhere when
un-fullscreening and disappear when going back to fullscreen. Resizing windows
causes really awful flickering. Popups like OBS's settings menu cause the whole
screen behind the window to go black, and then you can make the black disappear
by dragging the window around. It's really bad.
Rebooting temporarily fixes it, but it always comes back. This issue was not
present on 5.22.
STEPS TO REPRODUCE
1. Upgrade to 5.23.0
2. Make sure compositing is enabled, OpenGL 3.1
3. After a period of time, compositing will go completely wonky.
OBSERVED RESULT
Compositing is essentially broken
EXPECTED RESULT
Compositing doesn't cause giant black boxes and flickering.
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: Arch Linux
(available in About System)
KDE Plasma Version: 5.23.0
KDE Frameworks Version: 5.88.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
Two short video clips demonstrating the issue(s):
Black Boxes when fullscreen/unfullscreening: https://youtu.be/g5oObBP07VU
Black everything, flickering when resizing: https://youtu.be/P0NMTpt5pW0
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