Here's the log of an Ubuntu installation using FAI 6 and Ubuntu 22.04 in kvm (no real nvidia HW available)
http://public.cs.uni-koeln.de/lange/ubuntu-fai.log There's no problem by using the wrong kernel. Have a look at line 9236ff The installaion ISO was created using https://fai-project.org/FAIme, and I've selected Ubuntu version and added the two packages linux-headers-generic nvidia-driver-525 Maybe this helps -- regards Thomas