Hi,
Can you try installing kernels packaged by Debian from between Debian 12 and Debian 13 fromhttps://snapshot.debian.org/ to find the newest kernel that still works and the oldest broken one?
I have tested several kernels. Kernel 6.6.8 does not boot. Kernel 6.8.11 starts up, but has the freeze bug. The same applies to kernel 6.12.6.
It can sometimes take up two days or more for the first freeze to occur. There is no apparent cause; it seems to be completely random.
Kernel 6.1.0-35-amd64, however, runs absolutely stable. Best regards, Steffen
