Bug 491614

Summary:	Low framerate on fullscreen stellarium [WAYLAND]
Product:	[Plasma] kwin	Reporter:	German P <germanp82>
Component:	performance	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	xaver.hugl
Priority:	NOR
Version First Reported In:	6.1.4
Target Milestone:	---
Platform:	Manjaro
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description German P 2024-08-12 11:21:29 UTC

When running stellarium (flatpak) in fullscreen framerate remains at 30 (monitor is 60fps), switching to window mode it runs at 60 as expected. Running in xwayland fixes the issue.
This only happens in plasma, It works as expected in gnome and wlroots based compositors


STEPS TO REPRODUCE
1. Run stellarium flatpak
2. drag the mouse (stellarium reduces framerate when idle)
3. see framerate at the bottom of the screen
4. switch to window mode (F11)
5. framerate is correct

SOFTWARE/OS VERSIONS
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: Manjaro
KDE Plasma Version: 6.1.4
KDE Frameworks Version: 6.4.0
Qt Version: 6.7.2

Comment 1 German P 2024-08-12 11:34:05 UTC

I forgot to say I am on nvidia GTX960 drivers 555.58.02 and the intel IGPU is disabled in bios

Comment 2 Zamundaaa 2024-08-12 13:54:13 UTC

This is a known NVidia driver bug, fixed in driver 560 IIRC

Comment 3 German P 2024-08-23 21:59:06 UTC

I updated to 560 driver and framerate is back to normal. Thanks for the info.