How to edit GRUB options, unable to boot

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@pronubio

I have a laptop with HDMI, this HDMI works even without Nvidia, I don’t have any other option to attach any other display.

Are you sure that HDMI is directly connected to Nvidia and not through Intel?
[GUIDE] Optimus laptop dGPU passthrough · GitHub
[GUIDE] Optimus laptop dGPU passthrough · GitHub
Check your BIOS settings, maybe there is some option to connect Nvidia to HDMI directly:

For some Dell laptop (such as mine), There is a Display port direct output mode option in Video → Switchable Graphics, enable it and it will assign all display port (mDP, HDMI, Thunder Bolt etc.) directly to the dGPU. Check if your BIOS offer some similar options.

If there is no way to use Intel GPU for your laptop display and Nvidia GPU for HDMI then you can try this:

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…