I upgraded to the latest kernel (6.14.4-400) this morning.
After the reboot, the system became very laggy.
A quick look at the top output in the terminal showed that kwin_wayland was constantly using a lot of CPU (almost 100% , with some peaks largely over 100%).
Booting with the previous kernel 6.14.2-401 solves this issue.
Thanks in advance, and please feel free to tell me if you need more details to investigate
That sounds like mesa was not upgraded. What does rpm -q mesa-dri-drivers report? It should report “mesa-dri-drivers-25.1.0~asahipre20250425-1.fc42.aarch64”.
There is one known issue due to the dropped libOSMesa which is required for asymptote (might be installed as texlive dependency). This one should be resolved during this day.
There should be a fix in the next hour. dnf --refresh upgrade (or updates via Discover/GnomeSoftware after refreshing) should then upgrade mesa compatible with the new kernel.
fixed packages are in place now. All mesa package versions should be 25.1.0~asahipre20250425-4 except for mesa-libOSMesa which will still at 25.1.0~asahipre20250221-1.fc42