https://bugs.kde.org/show_bug.cgi?id=447632
Bug ID: 447632
Summary: KDE/Plasma compositing issue: Transparent Firefox &
Truly dark theme for Sublime Merge
Product: kwin
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: m...@ratijas.tk
Target Milestone: ---
SUMMARY
KWin, video driver, or whatever is responsible for this… I don't know. But the
thing is, Firefox window may become transparent under certain conditions (or
just because it feels like it); Sublime Merge window content becomes black
under other certain conditions; icons, textures, and whole window surfaces may
contain garbage pixels after sleep, and so on…
I took a video depicting the process:
https://youtu.be/hFeFBrDVUy0
STEPS TO REPRODUCE
1. Launch Firefox
2. Hover over its icon in the task manager
3. Hover over the window preview on a tooltip of its icon
OBSERVED RESULT
Firefox's window may become transparent. Its server-side decorations are in
place. Hovering over, or interacting with the window (where it's supposed to
be) brings its graphics back to normal. But otherwise it is fully transparent;
you can see things going on behind it.
EXPECTED RESULT
Obviously, this should not happen.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.23.4
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2
Kernel Version: 5.15.11-arch2-1 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-6700HQ CPU @ 2.60GHz
Memory: 15.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 970M/PCIe/SSE2
Firefox: 95.0.2-1
Everything KDE related is from git master
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