Bug 475877

Summary:	Lags visible with wayland on 4k monitor
Product:	[Plasma] kwin	Reporter:	michelepetrelli73
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description michelepetrelli73 2023-10-20 13:13:44 UTC

I run desktop plasma with wayland on two monitors. The first monitor 2k connected to hdmi intel internal card. The second 4k connected to nvidia phoneix RTX3050.
On a full hd 2k monitor all smooth, wayland has no problems.
On a 4k super hd monitor with nvidia there are lags. The mouse does not run smoothly but has lags, slowdowns. I would like to report this to wayland developers but I don’t know how to contact them.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma on: Opensuse Tumbledweed / Fedora 38 

ADDITIONAL INFORMATION
I still can’t use wayland because of this problem which doesn’t exist on xorg.

Comment 1 michelepetrelli73 2023-10-20 13:47:34 UTC

The problem has been completely solved by adding:

KWIN_DRM_USE_MODIFIERS=0

to the etc/environment file