https://bugs.kde.org/show_bug.cgi?id=499322
Bug ID: 499322
Summary: On X11, with KWIN_COMPOSE=N, it is impossible to run
another compositor
Classification: Plasma
Product: kwin
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: guido.iod...@gmail.com
Target Milestone: ---
SUMMARY
On X11, with KWIN_COMPOSE=N, it is impossible to run another compositor
STEPS TO REPRODUCE
1. Run KWIN_COMPOSE=N kwin_x11 --replace
2. run picom
OBSERVED RESULT
picom --diagnostics
**Version:** v12.5 (/startdir/picom revision a456d43)
### Extensions:
* Shape: Yes
* RandR: Yes
* Present: Present
### Misc:
* Use Overlay: No
(Another compositor is already running)
* Config file specified: None
* Config file used: /etc/xdg/picom.conf
### Drivers (inaccurate):
modesetting
### Backend: glx
* Driver vendors:
* GLX: Mesa Project and SGI
* GL: Intel
* GL renderer: Mesa Intel(R) Iris(R) Xe Graphics (TGL GT2)
* Accelerated: 1
[ 30/01/2025 14:17:35.954 egl_init WARN ] The egl backend is still
experimental, use with care.
### Backend: egl
* Driver vendors:
* EGL: Mesa Project
* EGL driver: iris
* GL: Intel
* GL renderer: Mesa Intel(R) Iris(R) Xe Graphics (TGL GT2)
EXPECTED RESULT
Picom shuld not found another compositor running
SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux
KDE Plasma Version: 6.2.5
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.1
Kernel Version: 6.13.0-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 8 × 11th Gen Intel® Core™ i5-1135G7 @ 2.40GHz
Memory: 15.4 GiB of RAM
Graphics Processor: Mesa Intel® Iris® Xe Graphics
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