Hello there,
I have a pretty annoying problem with my Soundblaster x3 (USB DAC). It falls into one IOMMU group with many other devices, i don't have a PCIe USB card, so I can't single out this USB port. I just check the box in my VM template.
My Windows 10 VM is set up as dualboot (thanks to spaceinvader), so I passthrough the NVMe drive.. Everything is great but if I have a crash of the Sound Blaster command centre I have to plug and unplug the DAC. And then I just lose the device from everywhere. Restart of VM or unraid, adding VM template again.. nothing works.
The only fix I have is to boot in bare-metal Windows, then back to unraid and voilá the sound is back. I can only think that it must be driver problem, because when I switch between bare metal and VM it is setting up devices at the startup.
Thank you Unraid community :), and please excuse my English if something doesn't make sense.