https://bugs.kde.org/show_bug.cgi?id=441409
Bug ID: 441409
Summary: [wayland] KWIN does not support GPU acceleration
(resets to llvmpipe) in case if one gpu does not
support ones
Product: kwin
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 140965
--> https://bugs.kde.org/attachment.cgi?id=140965&action=edit
glxinfo-observer (in wayland mode)
SUMMARY
I have two GPU's in my server (Dell PowerEdge r720): integrated Matrox MGA200e
and discrete nvidia gt 730. Matrox MGA200e does not support any kind of opengl
acceleration (it uses LLVMpipe).
In Xorg mode I setting up nvidia as default gpu (matrox disabled).
In Wayland mode both GPU's are active, but KWIN/plasmashell inits LLVMpipe
driver instead of proper GPU acceleration (nvidia eglsteams).
Expected is to support GPU acceleration in at least one display.
The issue also reproduced with Matrox + AMD Radeon Rx 560.
STEPS TO REPRODUCE
1. Have Matrox GPU (or any old-gen videocard) without actual GPU acceleration
support.
2. Have modern GPU.
3. Start KDE Wayland session.
4. It uses LLVMpipe insead of acceleration of modern GPU.
OBSERVED RESULT
System GPU initialized as LLVMpipe
EXPECTED RESULT
System GPU initialized as (NVIDIA|AMDGPU)
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.22.4
(available in About System)
KDE Plasma Version: 5.22.4
KDE Frameworks Version: 5.85.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
Kernel: 5.13.12-gentoo-dist
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