https://bugs.kde.org/show_bug.cgi?id=494675
Bug ID: 494675
Summary: Screen tearing and lag when moving windows diagonally
Classification: Plasma
Product: kwin
Version: 6.2.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: antonio.ti...@proton.me
Target Milestone: ---
SUMMARY
After updating to KDE Plasma 6.2, started experiencing tearing and lagginess
issues when moving/dragging windows around.
STEPS TO REPRODUCE
1. Drag a window diagonally (any angle should reproduce the problem).
OBSERVED RESULT
Window tears and doesn't move smoothly (with a low framerate).
EXPECTED RESULT
Same or similar smoothnes than when windows are dragged strictly
vertically/horizontally
SOFTWARE/OS VERSIONS
Linux: Linux 6.11.3-zen1-1-zen
KDE Plasma Version: 6.2
Qt Version: 6.7.3-2
ADDITIONAL INFORMATION
using wayland
using optimus manager to only use dedicated gpu (nvidia)
nvidia-drm module loaded and parameters active
nvidia module loaded and EnableGpuFirmware=0
Reproduced with a laptop + 2 external monitors setup. Never reproduced in
laptop screen. For the external monitors, sometimes happens on both, sometimes
happens in only one.
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