Node won’t start after modifying modprobe.d files

[dabo53]

Hello
One of my nodes has an issue a few seconds after the boot. It boots fine, and I can see the first lxc and vms coming up, but then after a few seconds only it becomes unresponsive.

I connected a screen to it, and I can see the boot, then asking me to login, but directly after (no login yet) the screen goes of, like it lost the signal.

It happened right after trying to apply this procedure :
https://www.reddit.com/r/homelab/comments/b5xpua/the_ultimate_beginners_guide_to_gpu_passthrough/
(by now I know that this procedure is superseeded and I should not have tried to apply it)
after setp 4 where I am supposed to blacklist drivers, it first became unresponsive.

So I booted up in recovery mode and checked and removed:
/etc/modprobe.d/iommu_unsafe_interrupts.conf
/etc/modprobe.d/kvm.conf
/etc/modprobe.d/blacklist.conf


But no changes, still the same behaviour.

So I compared the system logs from a successful boot with todays, but I see no difference in errors:
OK:


KO:

I know I did something stupid, can someone help me please?

 

[dabo53]

I just found out that when I start recovery mode and than continue to boot (Ctrl+D) everything works fine