Hello everyone,

I have an issue with my desktop, which I really don't understand.

It is a desktop PC, with a Nvidia GPU, which I use for development (of AI, but like the image analysis part, not the slop part). I usually let it always run, and my previous machine was working fine like this.

However, on this machine, I get crashes after either a few days or a few weeks.

These "crashes" are weird : the machine is still up (and I can ping it), however I can't ssh into it, I can't connect to cockpit either, and can't login physically on it (the display is frozen).

The only way to get it back up is to forcefully shut it down, wait a little and then powr it back up; but this isn't ideal, since it interrupts computations etc

The only crashes shown in journalctl are related to irrelevant (I believe) programs : KDEConnect, DrKronqi, etc; nothing right before the crash.

Do you have any idea what could cause this ?

I tried logging temperatures, but nothing abnormal showed up. I ran memtest86+, nothing showed up either. Smart tells me everything is alright for my drives as well.

Right now I'm thinking about changing the alimentation or the motherboard, but frankly I don't know what's going on and it's really puzzling me.