https://bugs.kde.org/show_bug.cgi?id=466655
Bug ID: 466655
Summary: Wayland: Red and blue channels are swapped when
screencasting in certain applications
Classification: Plasma
Product: kwin
Version: 5.27.2
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: xna...@hydra-development.net
Target Milestone: ---
SUMMARY
Since 5.27.2, and possibly 5.27.1 (untested - but not 5.27.0), the red and blue
color channels are swapped when screencasting in certain applications.
It seems that applications using WebRTC are affected by this, tested using
Firefox and Slack. OBS, for example, is NOT affected by this.
NOTE: In 5.27.0, this bug affected the mouse cursor only, but since at least
5.27.2, it is affecting the entire image.
STEPS TO REPRODUCE
1. Open an affected application (e.g. Firefox, Slack)
2. Begin screencasting (type doesn't matter, i.e. window or screen)
OBSERVED RESULT
Screencasted image has red and blue color channels swapped.
(confirm by screenshotting the casted image and swapping the red & blue color
channels in GIMP to get the original image back)
EXPECTED RESULT
Screencasted image does not have red and blue color channels swapped.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Gentoo
(available in About System)
KDE Plasma Version: 5.27.2
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Mesa: 23.0.0
ADDITIONAL INFORMATION
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