GPU not usable by VM?

[Farout]

Check your IOMMU groups.

Passing GPU through VM - running out of physical options?

For it to work, the GPU and the audio device needs to be in a discreet IOMMU group. You can check by running this script: #!/bin/bash for d in /sys/kernel/iommu_groups/*/devices/*; do n=${d#*/iommu_groups/*}; n=${n%%/*} printf 'IOMMU Group %s ' "$n" lspci -nns "${d##*/}" done Save this script on your truenas as IOMMU.sh Then run it with bash IOMMU.sh