https://bugs.kde.org/show_bug.cgi?id=489964
Bug ID: 489964
Summary: KWIN falls back to software rendering on kernels with
simpledrm and NVIDIA binary driver
Classification: Plasma
Product: kwin
Version: 6.1.2
Platform: Neon
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: wayland-generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
KWIN falls back to software rendering on kernels with simpledrm and NVIDIA
binary driver.
STEPS TO REPRODUCE
1. Have Plasma 6.1.2 (anything above 6.1)
2. Have a kernel with simpledrm (xanmod 6.8+)
3. Enter wayland session.
OBSERVED RESULT
The desktop is choppy, slow, renders on CPU.
The screen doctor shows a non existent Unknown monitor.
EXPECTED RESULT
The desktop should be fast and should render on GPU.
There shouldn't be any phantom monitors.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Neon/6.1.2
(available in About System)
KDE Plasma Version: 6.1.2
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.0
ADDITIONAL INFORMATION
The same setup with a kernel that's configured with vesafb instead of simpledrm
works as intended.
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