[SOLVED] Tried hardware passthrough but didnt work out that well

Software & Operating Systems Linux
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1

Hi, I tried to do GPU passthrough today. Did everything as described in @wendell's post. Well, I didn't blacklist the Radeon driver, but as I use a AMD GPU as my Linux GPU, I thought if I did this Arch wouldn't give me any video output (correct me if I'm wrong on this one).

Then I proceeded to create a VM with virt-manager and installed Win10 over the VNC, which worked great, then I passed through my RX480 and nothing happened. As I tried to turn my VM off again my PC crashed. If you need any log files, just tell me how I get them and I will post them.

Config:
newest Arch-Linux x64 with systemd bootloader
CPU: AMD FX-6100
RAM:some 16GB Corsair Kit (2*8GB)
Mobo: Asrock 990fx Killer Fatal1ty
Linux GPU: R9 270X
Guest GPU: RX 480

2

If you never installed the proprietary amd drivers it should just be as simple as passing through the second gpu, without blacklisting anything. Did you install amd drivers on linux?

3

Yes, I did install the xf86-video-amdgpu driver. Can I just uninstall it and it works?

Edit: uninstalling the driver solved the crashing. But the the guest GPU still gives me no signal

4

Got everything working, changed the efi vars to the https://www.kraxel.org/repos/jenkins/edk2/ efi vars and now it works.