this post was submitted on 10 Dec 2024
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I passthrough a GPU (no iGPU on this mobo).
It only hijacks the GPU when I start the VM, for which I haven't configured autostart.
Before the VM is started it's showing the host prompt. It doesn't return to the prompt if the VM is shutdown or crashed, but a reboot would, hence not autostarting that VM.
If it got borked too much, putting a temporary GPU might be easier.
Also, don't break your ssh.
Pretty easy with PKI auth.
How did you do this? All the tutorials I read hijack the GPU at startup. Do you have to manually detach the GPU from the host before assigning it to the VM?
Interesting.
I'm not doing anything special that wasn't in one of the popular tutorials and I thought that's how it was supposed to work, although it might very well be a "bug" how it behaves right now.
I don't know enough about this, but the drivers are blacklisted on the host at boot, yet the console is still displayed through the GPU's HDMI at that time which might depend on the specific GPU (a vega64 in my case).
The host doesn't have a graphical desktop environment, just the shell.
This is the problem I was alluding to, though I'm surprised you are still able to see the console despite the driver being blacklisted. I have heard of people using scripts to manually detach the GPU and attach it to a VM, but sounds like you don't need that, which is interesting