Bug 493147

Summary:	Screen goes black in games
Product:	[Plasma] kwin	Reporter:	SimplyCorbett <tyler>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	normal	CC:	cwo.kde, nate, xaver.hugl
Priority:	NOR
Version:	6.1.5
Target Milestone:	---
Platform:	Gentoo Packages
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description SimplyCorbett 2024-09-15 09:37:32 UTC

SUMMARY

When using steam to play video games the screen constantly flashes black for 5-20 seconds, then it shows the game which works, then it goes back to being black. Back and forth. This does not happen on gnome.

STEPS TO REPRODUCE
1.  Install steam
2.  Set the following in steam command: 

__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia %command%

3) launch game

OBSERVED RESULT

frequent black screen

EXPECTED RESULT
works

Operating System: Gentoo Linux 2.15
KDE Plasma Version: 6.1.5
KDE Frameworks Version: 6.5.0
Qt Version: 6.7.2
Kernel Version: 6.10.10-gentoo-dist (64-bit)
Graphics Platform: Wayland
Processors: 32 × AMD Ryzen 9 7950X 16-Core Processor
Memory: 117.5 GiB of RAM
Graphics Processor: AMD Radeon Graphics iGPU + Nvidia dGPU

Comment 1 Zamundaaa 2024-09-19 20:51:05 UTC

Please attach the output of
> journalctl --user-unit plasma-kwin_wayland --boot 0
and
> sudo dmesg
here, after reproducing the issue.

Also, please check if you have adaptive sync enabled, and if disabling it changes anything.

Comment 2 SimplyCorbett 2024-09-28 23:00:25 UTC

Hi,

Sorry for the delay, real life got in the way. I will reinstall KDE on gentoo and get back to you by Monday. (but likely in 10-12 hours).

Comment 3 SimplyCorbett 2024-09-29 08:56:11 UTC

Yes, it is an issue with adaptive sync being enabled on HDMI.

If you still need the logs let me know and I will provide them, but it seems that disabling adaptive sync fixes it.

Comment 4 Zamundaaa 2025-03-11 19:38:29 UTC

Sorry for the delay. If you're still affected and want to do more, you can report this at https://forums.developer.nvidia.com/c/gpu-graphics/linux