Xwayland windows doesn't displayed properly: Graphics glitches

Hello every one. I am facing issue with wayland under kde plasma. recently i have updated xwayland (in fact xorg-xwayland package) and xorg apps stopped starting. (Have checked by downgrading xorg-xwayland: not help) Though the are starting but not displayed. There is now even window decoration for these. In area where app’s window should be an anamalous area is formed: graphical glithes happen there (screenshot below). Under xorg all work fine. In journalctl i have not found any errors related to xwaylanda and kwin.

Also intersting thing is that apps which run in native wayland mode work fine.

Some system info:

██████████████████  ████████   OS: Manjaro Linux x86_64 
██████████████████  ████████   Kernel: 5.11.19-1-MANJARO
██████████████████  ████████   Packages: 1396 (pacman), 13 (snap) 
██████████████████  ████████   Shell: bash 5.1.8 
████████            ████████   Resolution: 1920x1080  
████████  ████████  ████████   DE: Plasma 5.21.5
████████  ████████  ████████   WM: KWin  
████████  ████████  ████████   WM Theme: Breeze
████████  ████████  ████████   Theme: Breeze Dark [Plasma], Qogir-dark [GTK2/3] 
████████  ████████  ████████   Icons: breeze-dark [Plasma], breeze-dark [GTK2/3] 
████████  ████████  ████████   Terminal: yakuake 
████████  ████████  ████████   CPU: Intel i5-8600K (6) @ 4.300GHz 
████████  ████████  ████████   GPU: NVIDIA GeForce GTX 1050 Ti 
████████  ████████  ████████   

Here how discord app which is running in xwayland look (rectangle with cursor glitches)(postimg):
use the link: postimg.cc/gLVbnf72/8fbd245f

I’m no Wayland expert, but I’m pretty sure Xorg is the one meant for Nvidia graphics cards. While many people use Wayland with their Nvidia graphics cards, I have seen quite a few glitch report posts related to Wayland-Nvidia combinations. Maybe try switching to Xorg if you don’t have any specific reason to use Wayland?

Thanks for reply. I want to use wayland because i hope to solve problems with mouse wheel. In couple word in browsers (particularly opera) i have very ugly mouse wheel behavior. I temporary fixed that with smooth wheel addon or something, but i do not very trust to addons. I have heard that Wayland can make mouse wheel experience more smooth in all meanings of this word :slight_smile:

The issue was in nvidia drivers which are not supporting xwayland at that moment

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