[SOLVED] Error: bad shim signature on 6.8.12-5-pve kernel

almost.. the interesting part would be "journalctl -b" up until the multi-user target is reached.
 
nothing jumps out there.. you could compare the output of "lspci -vv" between the previous kernel and the broken one, or the boot journals?
 
nothing jumps out there.. you could compare the output of "lspci -vv" between the previous kernel and the broken one, or the boot journals?
Hello Fabian, thank you. I think I have to investigate more on my Hardware site. Either I replace the old HW, or reinstall it from scratch to see, if its the HW? Thanks anyway for your support.
 
Hello, is this the log you are looking for? Regards.
Based on my limited knowledge, it sounds like it might be a problem with initramfs or kernel. Have you tried these commands?:
update-initramfs -u -k all
update-grub

also I see vfio_virqfd is either not available or not loaded. Are you using passthrough for devices?