This time with latest firmware, with "rcu_nocbs=0-16" for #196683
Happened without any hibernation cycle.
Just the "GPU fault detected: 146" appeared, no "blocked for more than"
message.

Somehow it looks like when this "GPU fault" happens some locks are
never unlocked and therefore blocking the X server.
At least the possibility for a clean shutdown would be good.

Is there any other information I should collect next time, any other
configuration or version I can test?