Bug 455614

Summary:	Nvidia Wayland - Firefox window flickers upon resizing
Product:	[Plasma] kwin	Reporter:	tempel.julian
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DOWNSTREAM
Severity:	normal	CC:	kde, kovrov+kde, nate
Priority:	NOR	Flags:	vlad.zahorodnii: NVIDIA+
Version First Reported In:	5.25.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description tempel.julian 2022-06-19 14:56:03 UTC

SUMMARY
Firefox native Wayland WebRender window flickers upon resizing in a Plasma Wayland session with Nvidia.

STEPS TO REPRODUCE
1. Start Plasma Wayland session with proprietary Nvidia driver (GBM).
2. Run Firefox and make sure it starts with native Wayland backend and WebRender enabled
3. Resize the main or downloads window:

OBSERVED RESULT
It shows black flickering upon doing so.

EXPECTED RESULT
It shouldn't do that, it doesn't do that with Intel GPU.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.18.5
KDE Plasma Version: 5.25
KDE Frameworks Version: 5.95
Qt Version: 5.15.5 (KDE/Arch)

ADDITIONAL INFORMATION
Tested with Firefox 102.0b9
Nvidia 515.48.07 proprietary

Comment 1 David Edmundson 2023-07-07 09:59:22 UTC

There's some known sync problems with Nvidia proprietary driver. Kwin can't do anything about it.