Arch Linux updated their linux package to 6.10 recently, and since then, my system has had a screen flickering on the upper portion of the monitor. I tried out linux-lts, and the flickering went away. Furthermore, I downgraded the linux package back to 6.9.10, and the flickering also went away. My setup is: KDE Plasma 6.1.3, Xorg-Server 21.1.13, Mesa 24.1.4, and libdrm 2.4.122. I have a Radeon RX 6800 and a Ryzen 5 5600. The flickering occurs both on X11 and Wayland. My display is an Acer KG240, and is connected over displayport at 144hz. I have found one other report, which has a youtube video uploaded of the problem: https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1981054.html
Please report to https://gitlab.freedesktop.org/drm/amd/-/issues
We're currently in the progress of bisecting the issue :)
Likely already fixed by: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e3615bd198289f319172c428f20857accb46b830
Yes the mentioned patch fixes the issue for the reporter I have been in contact with!