[XORG] Need help to install Kubuntu on to computer with 4K screen

[LEEWU]

I love KDE and I have a long time going with KDE on Manjaro. So Arch distro is not support to config Rasp Pi well. I'm looking a better way to go through with Kubuntu. But when I install Kubuntu version 24.04 on to laptop or desktop with 4K screen, my screen had malfunction with mouse point and taskbar. Its change a dimension when I move. I changed Wayland to XORG, as the same situation.
Please help me fix

[Schwarzer Kater]

Welcome.

It would increase your chance that somebody can actually help you with your problem a lot, if you could provide details about all of your hardware, about software, the exact steps you took and your general set-up.

By the way, from the Kubuntu 24.04 LTS release notes: "A Plasma Wayland session is available for testing by installing the plasma-workspace-wayland package, but is not supported."

[oshunluvr]

Dual 4K screens on my desktop and a 4k laptop - no issues here. Sounds like a missing driver or driver error, not necessarily 4K issue.

Have you tried 1920x1080 instead?