Bug 490574

Summary: Cursor draws artifacts when launching Chromium
Product: [Plasma] kwin Reporter: YanEx <yanexbug>
Component: wayland-genericAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: yanexbug
Priority: NOR    
Version: 6.1.2   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
URL: https://issues.chromium.org/u/1/issues/353537745?pli=1
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Bug video
console output

Description YanEx 2024-07-20 17:52:17 UTC
Created attachment 171837 [details]
Bug video

SUMMARY
When the browser is launched, the mouse cursor starts drawing artifacts on the screen, all this is accompanied by flickering and slow startup. This happens with both Chromium Flatpak and RPM.

STEPS TO REPRODUCE
1. Launch your browser

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 40
KDE Plasma Version: 6.1.2
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2
Kernel Version: 6.9.9-200.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × 11th Gen Intel® Core™ i5-11400H @ 2.70GHz
Memory: 15.3 ГиБ of RAM
Graphics Processor: Mesa Intel® UHD Graphics
dGPU: NVIDIA GeForce RTX 3060 Laptop GPU Driver: 555.58.02
Manufacturer: HP
Product Name: Victus by HP Laptop

ADDITIONAL INFORMATION
This happens in all (or almost) Chromium browsers. Google Chrome, Brave...
This bug does not exist in the X11 session. Also there is no bug when running "chromium-browser --ozone-platform=wayland"
Comment 1 YanEx 2024-07-20 17:53:17 UTC
Created attachment 171838 [details]
console output
Comment 2 Vlad Zahorodnii 2024-10-01 09:10:24 UTC
It's a _NET_WM_SYNC_REQUEST handling issue, it doesn't work properly with Xwayland clients atm. BUT it's also worth pointing out that neither web browser properly handles _NET_WM_SYNC_REQUEST either.

*** This bug has been marked as a duplicate of bug 486464 ***