Bug 510214

Summary: Flicker in fullscreen vulkan games when OSD or notification appears over screen.
Product: [Plasma] kwin Reporter: Noland Nichols <noltogreen2187>
Component: generalAssignee: KWin default assignee <kwin-bugs-null>
Status: REPORTED ---    
Severity: minor CC: nate
Priority: NOR    
Version First Reported In: 6.4.5   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: shows the flickering in the video

Description Noland Nichols 2025-10-04 01:12:07 UTC
Created attachment 185495 [details]
shows the flickering in the video

SUMMARY
Games that use vulkan natively instead of directx through DXVK/VkD3D experience a flicker when entering/exiting fullscreen and when a OSD or notification appears over it.

Attached video will show example of what occurs.


STEPS TO REPRODUCE
1. Open vulkan title  (e.g. PEAK, DOOM Eternal, BeamNG.drive)
2. Use the mute/unmute audio shortcuts or have a notification appear over the fullscreen window

OBSERVED RESULT
Black flicker over the fullscreen window when OSD/notification appears over it.

EXPECTED RESULT
OSD/notification would appear without causing flickering.

SOFTWARE/OS VERSIONS
Operating System: Fedora 42
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.18.0
Qt Version: 6.9.2
Kernel Version: 6.16.9-cachyos1.fc42
Graphics Platform: Wayland

ADDITIONAL INFORMATION
GPU: AMD RX 5600 XT