NVIDIA proprietary driver installation community guide

[apparatus]

Check this guide:

Create a Gaming HVM

Hardware To have an ‘HVM’ for gaming, you must have A dedicated GPU. By dedicated, it means: it is a secondary GPU, not the GPU used to display dom0. In 2023, ‘Nvidia’ and ‘Amd’ GPU work. Not tested with Intel GPUs. External GPU using thunderbolt work (Create a Gaming HVM - #8 by solene) A screen available for the gaming ‘HVM’. (It can be a physical monitor or just to have multiple cables connected to the screen and switching between input source) Dedicated gaming mouse and keyboard. …

And also this if you want to use the qube with GPU seamlessly instead of using a separate display/keyboard/mouse:

Seamless GPU passthrough on Qubes OS with VirtualGL

We are presenting to you a guide regarding GPU passthrough created in collaboration with peers. Qubes OS already has extensive documentation available about GPU passthrough for 3D accelerated tasks but they all require in depth configuration, extra displays, and extra input devices. With VirtualGL (https://virtualgl.org) one can take advantage of the existing Qubes OS framework for audio/display by offloading OpenGL onto the secondary graphics card directly with VirtualGL. This document will mo…