Qubes 4.3.1 installation black screen (RTX 4090) – ASUS Z790 iGPU + GPU passthrough setup

[corny]

@quber2025

Your meaning is to first unplug the 4090 power socket, then install the Qubes system, and after installation

On my desktop, just pulling the 4090 would create a non booting issue. I had to remove the GPU from the pci slot.

The grub command to hide it is here (the first section)

Secure AI Inference with Qubes OS: A GPU Passthrough & Ollama Guide

This guide is made using AI. The model used was qwen3.5:27B This guide will go through the steps needed to set up a qube for running GPU accelerated AI inference, and how to integrate AI in multiple AppVMs using a single GPU. Hide the GPU from dom0 PCI devices cannot be assigned to multiple VMs simultaneously. You will crash the system if you attempt to pass a GPU to any VM while it remains attached to dom0. To prevent this, you must hide the GPU from dom0 before assigning it. In dom0, use l…