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VFIO: Vega GPU Passthrough but no HDMI Audio



I have a Vega 56 on an ASRock B350M Pro4 board with a Ryzen 1600. I have Arch installed and on the latest software. At this point I have GPU passthrough to a Windows 10 VM working well aside from one thing - HDMI audio is not detected. I have added the HDMI audio device on the Vega as part of it’s own PCIe root port and on the same PCIe root port as the GPU but the results are the same. Anyone seeing this?

XML ->



No glaring issues in the xml.

I know broken AMD hdmi audio is a common problem on linux guests, not sure about windows guests though.

Try asking here: