I am successfully passing through 4 x16 GPUs (filling all x16 ports).  I'd like to use the additional 3 x1 ports to pass-through GPUs on risers as well.

Is it possible to use a mining type x1 > USB > x16 riser adapter to pass-through a GPU to a VM?

 

UnRaid is not detecting the device as a GPU, but depending on the x1 port used, one of the following;

00:1c.5 PCI bridge: Intel Corporation C610/X99 series chipset PCI Express Root Port #6 (rev d5)
00:1c.6 PCI bridge: Intel Corporation C610/X99 series chipset PCI Express Root Port #7 (rev d5)
00:1c.7 PCI bridge: Intel Corporation C610/X99 series chipset PCI Express Root Port #8 (rev d5)
 

Should i start with manually using the XML file to pass-through this device?

 

Edited November 9, 20187 yr by TurboMyPC

To passthrough the PCI x1 device;

00:1c.5 PCI bridge: Intel Corporation C610/X99 series chipset PCI Express Root Port #6 (rev d5)

 

Would I use the following code?

 

    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x00' slot='0x1c' function='0x5'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x01(NEXTBus#available)' slot='0x00' function='0x0'/>
    </hostdev>

 

omitting the () note.

Edited November 8, 20187 yr by TurboMyPC

UnRaid started auto-detecting the GPU now.  That's convenient.  However, when passing through to windows, or ubuntu as primary GPU, i just get a jumbled color splash screen looping and the VM won't boot.

 

However, it does work as a secondary GPU in ubuntu (working), and detected in windows (but display driver issues)

Edited November 10, 20187 yr by TurboMyPC