How to disable the amdgpu module?

I've tried adding amdgpu to the modprobe.d blacklists, as well as the kernel commmand line, but it appears dracut is loading it via a rd.driver.pre=amdgpu line.

The interim solution I've used is to disable the GPU entirely from the BIOS, but I'd like to use it with VM passthrough in the future. As far as I can tell, dracut is getting this config from /lib/dracut/dracut.conf.d/99-nvidia.conf, but I'm not sure if I'm supposed to edit this file to disable this

My Google searching is failing, what's the correct method for getting Bazzite to not load the amdgpu driver at all?

Solution

I ultimately solved this by adding

vfio_pci.ids=1002:13c0

vfio_pci.ids=1002:13c0

(the GPU PCI ID for the 9950X3D) to the start of the kernel command string via

rpm-ostree kargs --editor

rpm-ostree kargs --editor

and rebooting. the amdgpu is a recognised pci device I can attach to a VM, but wayland and the amdgpu module are not detecting it as a device to control, so tools like ALVR aren't choosing the wrong GPU

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