https://bugs.kde.org/show_bug.cgi?id=430976
Bug ID: 430976
Summary: Problems with rendering on Wayland and Nvidia
Product: plasmashell
Version: 5.20.4
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: generic-crash
Assignee: plasma-b...@kde.org
Reporter: xa9i...@gmail.com
Target Milestone: 1.0
Created attachment 134400
--> https://bugs.kde.org/attachment.cgi?id=134400&action=edit
Render artifacts.
SUMMARY
After installing arch linux, proprietary drivers on the Nvidia graphics card,
and running plasma on wayland, strange rendering artifacts (Cloning flashing
cursors, Strange shadows) are observed when running certain programs
(google-chrome, chromium, flameshot...). There are no such problems when
starting firefox, telegram-desktop.
Sometimes a problem with a problematic program can be solved by running
shortcut 'Quick Tile Windows to the Left/Rigt' (Meta+Left/Right), and then
everything works as it should. Artifacts completely disappear when the program
that could not be displayed is closing by Alt+F4.
It is noteworthy that render problems appear only in the place where the open
application should theoretically be located. The rest of the desktop works
correctly.
STEPS TO REPRODUCE
1. Install ArchLinux
2. Install Proprietary drivers for Nvidia
3. Add kernel option for running driver in modesettings mode
(dvidia-drm.modset=1)
4. Inslall Plasma-meta, plasma-wayland-session and sddm
5. Install chromium
6. Start Plasma Wayland
7. Open chromium
Measures taken:
1. Reboot system - Nothing has changed
2. Changing compositor backend - Nothing has changed
EXPECTED RESULT
Correct rendering of opened applications.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux 2020.12.01
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.77.0
Plasma Wayland: plasma-wayland-session-5.20.4-1
Egl Wayland: egl-wayland-1.1.6-1
Nvidia Driver: nvidia-455.45.01-7
Qt Version: 5.15.2
Kernel Version: 5.9.14-arch1-1
OS Type: 64-bit
Processors: 20 × Intel® Core™ i9-10900K CPU @ 3.70GHz
Memory: 31.3 GiB of RAM
Graphics Processor: GeForce RTX 3080/PCIe/SSE2
ADDITIONAL INFORMATION
To be honest, I'm not completely sure that this bug is due to KDE. When running
KDE on Xorg, there are no such problems, but there are microfreezes of
animations, that's why I want to switch to Wayland. But on the same system,
next to KDE, I installed Gnome and when running Gnome Wayland, no artifacts are
observed. On the Windows 10 operating system, too, everything works. I came to
the conclusion that the problem is not with wayland or the graphics card.
Perhaps can be a problem in the Nvidia drivers, but Gnome works without
problems...
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