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testdasi

Automatic VM xml amendment for multi-function devices (e.g. group GPU + HDMI audio to the same bus)

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When dealing with multi-function devices (e.g. GPU with GPU + HDMI audio), Unraid GUI will assign a new bus for each additional device by default.

This can cause compatibility / performance issues in some cases, most notably but not exclusive to MacOS VM.

 

The workaround is adding multifunction='on' and change the bus + function values in the xml.

  • If any edit is done via the GUI, it will revert the bus + function back to the default method, requiring additional edits.
  • New users are also unlikely to be able to make these manual xml edits.

 

It would be a good idea to enhance the VM GUI to detect and make the appropriate edits in the xml automatically for these devices.

E.g. group devices by bus + function and create the bus + function in the xml accordingly (adding multifunction='on' for the first device of a multi-function group).

 

At least, I would imagine it would not too complicated to apply it as a priority to GPU and HDMI audio devices since they have their own dedicated GUI boxes so matching them is rather simple.

Edited by testdasi

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