Im trying to assign one of my two R9 280's to vfio so I can use it for vga passthrough the only problem I'm having is I cant assign the card to vfio because the radeon driver loads before vfio gets a chance to load and assign the card to vfio. In Ubuntu 15.04 I never had this problem its only in 15.10. What could I do is there some way of telling ubuntu to load vfio first? I believe that the radeon driver loading before the vfio driver is the problem but I could be wrong. (The hdmi audio on the card gets assigned to vfio-pci but not the vga part)
dmesg: http://pastebin.com/WX8HGyK0
dmesg: http://pastebin.com/WX8HGyK0