https://bugs.kde.org/show_bug.cgi?id=521814
Bug ID: 521814
Summary: kwin_wayland process holds secondary gpu
Classification: Plasma
Product: kwin
Version First 6.7.0
Reported In:
Platform: CachyOS
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: platform-drm
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
DESCRIPTION
With 6.7, LACT shows a "kwin_wayland" process holding my secondary nvidia gpu
which is not used for displaying (kernel parameter nvidia_drm.modeset=0 is
used).
STEPS TO REPRODUCE
1. Have two gpus : one AMD one for rendering, and a secondary nvidia with
nvidia_drm.modeset=0 kernel parameter.
OBSERVED RESULT
Observe kwin_wayland running a process on the secondary gpu not used for
rendering.
EXPECTED RESULT
kwin_wayland not running any process on the secondary gpu.
SOFTWARE/OS VERSIONS
Operating System: CachyOS Linux
KDE Plasma Version: 6.7.0
KDE Frameworks Version: 6.27.0
Qt Version: 6.11.1
Kernel Version: 7.0.12-1-cachyos (64-bit)
Graphics Platform: Wayland
Graphics Processor 1: AMD Radeon RX 9070 XT
Graphics Processor 2: NVIDIA GeForce GTX 1080 Ti
ADDITIONAL INFORMATION
This appeared with 6.7.
Setting the environment variable KWIN_DRM_DEVICES = "<card>" does not help.
Logging out and logging back in released the kwin_wayland process.
Other bug reports suggest this may be related to SDDM.
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