Is this regressing from an earlier kernel? If yes can you isolate the
range more closely?
based on "journalctl -t kernel | grep 'Linux version'" the prior version with no hang seems to be 6.9.12-amd64. i will try it after the newer 6.12.
Additionally 6.12.43-1 is not the current trixie kernel, do the hangs
are reproducible with 6.12.48-1 (and the today to be released via the
13.2 point release) 6.12.57-1?
i've booted to linux-image-6.12.57+deb13-amd64 and i will see what happens.
Regards,
Salvatore