Andf no one in thread even point on it…
You problem - may be - not linux, not Nvidia but your Intel CPU.
I myself for last 6 months - in this Nvidia forum saw multiple “bugreports” - where people assumed “their Nvidia GPU is bugged” but it was Intel.
For example look this thread RTX4090, torch, kernel tried to execute NX-protected page - #5 by s48gs.w
I would recomend you to install Windows and see if you have same stability problems there - if you do - run to RMA your damaged CPU.