https://bugs.kde.org/show_bug.cgi?id=478563
Bug ID: 478563
Summary: Ghosting/Flickering Nvidia wayland - Introduced in
Plasma 6
Classification: Plasma
Product: kwin
Version: 5.90.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: kodatar...@yahoo.com
Target Milestone: ---
SUMMARY
There seems to be some unusual ghosting/flickering even in native wayland apps
since plasma 6 update, note this does not happen on plasma 5.(Nvidia)
STEPS TO REPRODUCE
1. Just setup a widget like the CPU Core Usage or Hard Disk activity, after a
little bit you may notice frame duplication/ghosting/artifacting
OBSERVED RESULT
ghosting of frames/artifacting/sometimes flicker
EXPECTED RESULT
To be as on Plasma 5, smooth on wayland apps and mostly fine xwayland with the
explicit sync patched in(xorgproto, wayland-protocols and xorg-xwayland
packages)
SOFTWARE/OS VERSIONS
Operating System: EndeavourOS
KDE Plasma Version: 5.90.0
KDE Frameworks Version: 5.246.0
Qt Version: 6.6.1
Kernel Version: 6.6.6-1-cachyos (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5800X3D 8-Core Processor
Memory: 31,2 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3090/PCIe/SSE2
Nvidia driver version: 545.29.06 - note this driver does introduce it's own
issues, but what is observed on the desktop can also be observed on 535 which
did not exhibit such problems on native wayland apps, nor on xwayland with the
explicit sync patches on Plasma 5. There is some change in Plasma 6/QT6 which
affects this.
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