Bug 475877 - Lags visible with wayland on 4k monitor
Summary: Lags visible with wayland on 4k monitor
Status: RESOLVED FIXED
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (other bugs)
Version First Reported In: unspecified
Platform: openSUSE Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-10-20 13:13 UTC by michelepetrelli73
Modified: 2023-10-20 13:47 UTC (History)
0 users

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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