I’m pretty sure this is a “nope!” but I was reading Secure AI Inference with Qubes OS: A GPU Passthrough & Ollama Guide - #23 by tanky0u and I have a GPU that I can hide, it’s just that it’s my only GPU. I don’t need nice graphics and really just want my GPU to be used for AI. If I hide my GPU, will it make the system break?
I did try this… but I did not finish it.
I would recommend setting up sys-gui-vnc, to have access to the GUI when you have no physical display and no text consoles. (I did not do it - big mistake)
Another possibility is to set up a serial console for dom0, but a lot of motherboards have no RS232 connector, and USB-RS232 is not possible.
Then lots of options in grub to disable every kind of gpu, video or framebuffer use by the dom0 kernel…
I remember video=vesafb:off video=efifb:off plus module blacklisting and pci device hiding. Possibly there was more.
I got as far as getting a dom0 display on a secondary video card, and passing the primary one to an AppVM. It was quite painful - a lot of blank screens and blind typing of encryption keys - but I could have prepared better.
I have no idea how to do this.
Short answer: no.
Long answer: see what @phceac wrote.