Arch Linux

Viperidae

Member

Registered: 2017-08-01

Posts: 2

vfio-pci: Radeon driver turns display on and off every 3 seconds

I just reinstalled Arch on a clean hard drive to attempt to isolate a problem I've been having with my graphics. My setup is as follows:
Radeon R5 220 GPU (For Linux), GeForce GTX 980 (Passed to a KVM virtual machine)

The problem I'm encountering apparently is being caused by vfio. Basically, when I blacklist my GTX 980 with vfio, my display will turn on and off roughly every 3 second.

I believe Linux is attempting to use the GeForce GTX 980 but obviously cannot as that has been disabled. I attempted to blacklist the nouveau module, to no avail.

It should be noted this is all occurring in the Linux framebuffer. I have chosen to not install a DE until this is resolved.

Anyways, so my theory is the problem is being caused by the linux kernel attempting to use both GPUs. The 980 works fine when I spin up my Windows 10 VM.

Last edited by Viperidae (2017-08-07 00:50:08)