@MajorTom thanks that could be a solution. In the end I moved my single-machine Homelab to Proxmox, because I have way better control in this specific use-case - I can see IOMMU groupings and figure out which USB controller I can also passthrough. And this works fine, I'm posting this from this VM.

XCPng isn't bad, it´s just not suited to my very specific use case.

Cheers,

Clément

I know there are... workarounds around that (e.g. for KVM you can hide the fact that it's running inside a VM, and I believe there are similar solutions for Xen).

But first things first - I want to get rid of that default framebuffer. Is there a way to pass 'base' Xen config options through XCP-ng (e.g. with an xe command)?

I know it won't work with the Nvidia drivers, but for now I want it to start with the nouveau driver on Linux, and at least get something working.

It's an Nvidia 1070

So after fixing Ryzen Gen1 IOMMU issues (see here), I can pass my GPU to a VM. Problem is, the default framebuffer is still present and is the default graphics (for Linux or Windows).

My googling shows me there's a gfx_passthru option in Xen that tells Xen to disable the default framebuffer and use the passed-through GPU as the only VGA for the VM. Is there a way to do the same in XCP-NG?

Thanks,

Clement