Bug 506450

Summary:	Flickering on 6.15 kernel
Product:	[Plasma] kwin	Reporter:	Michal <michaelspisiak>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	burner.unstuck600, kde, xaver.hugl
Priority:	NOR
Version First Reported In:	6.4.1
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Michal 2025-07-01 18:08:07 UTC

SUMMARY
Some applications in fullscreen flicker (white or black frame) when moving cursor between monitors or interacting with it. It does it with some games too (World Of Warcraft, Factorio). It doesn't happen when using other browsers (Brave or Falcon).

It didn't happen when using 6.12 LTS.
Journalctl doesn't show anything related while triggering this behaviour.

STEPS TO REPRODUCE
1.  Open Firefox in fullscreen (or a video) in multidisplay setup.
2.  Move mouse between monitors.

OBSERVED RESULT
White or black frame is displayed, then draws properly

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.4.1
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.1
Kernel Version: 6.15.4-arch2-1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × 11th Gen Intel® Core™ i5-11400F @ 2.60GHz
Memory: 32 GiB of RAM (31.2 GiB usable)
Graphics Processor: AMD Radeon Graphics RX 9060 XT 16 GB
Linux firmware: linux-firmware-amdgpu 20250627-1
Mesa: 25.1.4

Comment 1 Michal 2025-07-02 05:59:34 UTC

Additional info

I don't have adaptive sync active, primary monitor is UHD 60 hz, secondary is FullHD 75 hz.
Also tried GNOME with same system and this doesn't happen there with same kernel.

Comment 2 Adam 2025-07-02 20:20:35 UTC

Are you talking about the white flicker when rotating the camera in World of Warcraft (When your cursor hides)?
Does this happen when you disable HDR and color profiles?

Comment 3 Zamundaaa 2025-07-03 14:23:51 UTC


*** This bug has been marked as a duplicate of bug 505869 ***

Comment 4 Michal 2025-07-03 14:47:32 UTC

(In reply to PurifyingBrew from comment #2)
> Are you talking about the white flicker when rotating the camera in World of
> Warcraft (When your cursor hides)?
> Does this happen when you disable HDR and color profiles?

Disableing Color profile solved the issue, thank you.