Score:0

GPU stops functioning after some time

in flag

Sometimes after my computer is running for awhile, my GPU just stops running. In nvtop I can't see my GPU and only see my CPU. My CPU utilization goes through the roof as it tries to render everything (when this happened last night I could see there was some chrome render process that uses like 750% CPU in htop). The "Geforce RTX" light is still on when this happens. Also, my monitors are plugged in through the GPU, not the motherboard.

This wouldn't be a huge problem because restarting fixes it, but my computer is set up at home and is accessable via ssh. If I need to restart my computer, my GPU isn't recognized until AFTER I am signed in via the Desktop GUI. So if I'm away from home and need to reboot my computer (I do this via sudo reboot), I have to call my roommate and he has to walk over to my computer and sign me in. Then I can see my GPU in nvtop once he signs me in.

My system has a Nvidia 3080 Ti and I'm running Ubuntu 22.04.2 LTS

ar flag
This won't answer your question, but it will help you login using RDP remotely (only when you are not logged in locally). See [my answer to this question](https://askubuntu.com/questions/1407444/ubuntu-22-04-remote-desktop-headless/1409120#1409120), You don't have to ask your friend to login for you.
Score:0
vg flag

Check dmesg and /var/log/Xorg.0.log for errors.

But the most likely culprit is a HW issue: either your GPU is overheating (quite common problem this generation: some GPUs were sold with incorrectly-spread thermal paste; repasting fixes it) or the PSU can't provide enough energy and it goes down after the GPU asks a power spike (transient spikes is also a common problem for the 3000 series)

Login via CLI

In ssh you can try:

sudo service lightdm restart
sudo service gdm3 restart
sudo service sddm restart

Which one you need depends on your Desktop Manager.

Josh Majors avatar
in flag
I wasn't able to get the GPU to show back up by using `sudo service gdm3` Any other suggestions?
Matias N Goldberg avatar
vg flag
Then post the logs. There's no way a GPU disappears without nothing showing up on logs.
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