https://bugs.kde.org/show_bug.cgi?id=481554
Bug ID: 481554
Summary: Wayland + Nvidia - Extreme stuttering doing anything
Classification: Plasma
Product: kwin
Version: 5.93.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: ashco...@gmail.com
Target Milestone: ---
SUMMARY
***
On a hybrid setup (External monitors connected to NVIDIA GPU, laptop display
connected to internal intel GPU), there is extreme stuttering of the UI,
GLXGears will run at 1/2 the refresh rate of the displays.
***
(Note, on plasma 5.x, using `KWIN_DRM_USE_MODIFIERS=0` would resolve this
issue, but in 6.x, either this env. variable is ignored, or does nothing)
I've attached a video showing this issue, both my external monitors are 120Hz,
and the laptops own display is 144Hz, so theoretically, the minimum framerate I
should get is 120Hz, but, you can see when doing anything like moving windows
around, the glxgear window stutters and framerate drops significantly1.
SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.93.0
KDE Frameworks Version: 5.249.0
Qt Version: 6.7.0
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