I have a problem getting my drawing tablet to work in Unraid via USB-C on my AMD 6900XT.

It is a Huion Kamwas (2021) with a 3to1 and a USB-C only cable connection.

I would like to get this working only with the USB-C Cable, cause the 3to1 cable is very bulky and a little bit short too.
 

Hardwarewise IOMMU looks like this, which works for the display connected. Display is working, pen is not.

Any chance someone could help me, how to setup the XML, that also USB-Input for the pen is working, beside the display part?
 

 

 

<hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x0d' slot='0x00' function='0x0'/>
      </source>
      <alias name='hostdev0'/>
      <rom file='/mnt/disks/PNY44200029300702054/VM/macOS/AMD.RX6900XT.16384.201104.rom'/>
      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0' multifunction='on'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x0d' slot='0x00' function='0x1'/>
      </source>
      <alias name='hostdev1'/>
      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x1'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x0d' slot='0x00' function='0x2'/>
      </source>
      <alias name='hostdev2'/>
      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x2'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x0d' slot='0x00' function='0x3'/>
      </source>
      <alias name='hostdev3'/>
      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x3'/>
    </hostdev>

 

 

 

Edited October 5, 20241 yr by derpuma

I forgot to mention, this happens only in my macOS virtual machines.