February 3, 20206 yr 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 February 3, 20206 yr by testdasi
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