Hey all, I am trying to use UnRaid on my systems to create a couple of workstations using GFX card pass thru. I am having a problem that I can't figure out though: one of the VMs is not able to grab the GFX card.

 

The system is built on a Asus W9DPE motherboard with two xeon CPUS and 32GB of RAM and shedload of HDs in an array that is all running fine. I have two graphics cards plugged into this: an ATI Radeon 9700 and a Radeon 7800. I have created two VMs: one called WORK and one called KATH. The Radeon 7900 is passed thu to WORK, which runs Win 10 and runs fine (typing this on that VM). The VM called KATH works fine when I assign it to use VNC as a gfx card: no isues. But when I assign it the other gfx card (the Radeon 7800) it fails with this message:

 

internal error: early end of file from monitor: possible problem:
2016-01-24T18:30:13.737306Z qemu-system-x86_64: -device vfio-pci,host=83:00.0,bus=root.1,addr=00.0,multifunction=on,x-vga=on: vfio: error opening /dev/vfio/43: Operation not permitted
2016-01-24T18:30:13.737361Z qemu-system-x86_64: -device vfio-pci,host=83:00.0,bus=root.1,addr=00.0,multifunction=on,x-vga=on: vfio: failed to get group 43
2016-01-24T18:30:13.737386Z qemu-system-x86_64: -device vfio-pci,host=83:00.0,bus=root.1,addr=00.0,multifunction=on,x-vga=on: Device initialization failed
2016-01-24T18:30:13.737409Z qemu-system-x86_64: -device vfio-pci,host=83:00.0,bus=root.1,addr=00.0,multifunction=on,x-vga=on: Device 'vfio-pci' could not be initialized

 

I understand this is a problem with the gfx cards being in the same group, but I can't seem to get around that. I have tried the following:

 

• - moving the second GFX card to other slots: no change. I tried 3 slots (my motherboard has a rather ridiculous 7 PCIe 16x slots, but none made any difference here).
  
• - using another GFX card: no change.
  
• - Turning PCIe ACS override to Yes and rebooting: no change.
  
• - Yelling at the thing: no change (but my dog did get upset).
  

 

Any ideas? I'd really like to assign the second card to this machine so I can use the HDMI out on this to drive the monitor directly. It doesn't need to have anything powerful in the GFX department, but I have a long hDMI cable run to use.

Try this hotfix here.

that seemed to work, thanks!