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0f7b58d
(Get the code!)
Thanks David, after reinstalling again, I have tested "Digital Surround 5.1 (HDMI) nr 4 Output" and audio does work (only after installing the nvidia proprietary driver).
It is good that a user can now configure this via the GUI. However, somehow I missed this after selecting a few options. I had no idea what "nr 4 Output" meant. Looking to get an out-of-the-box solution, what could we do about this?
When I edited the alsa config to limit the available interfaces exposed to pulseaudio, the drop down box displayed:-
Digital Stereo (HDMI) Output
Digital Surround 5.1 (HDMI) Output
Which was perfect and simple.
I think the solution to this lies in alsa. Unless these other three outputs have any use, then I think alsa should not expose them. (If they do have any other use, I would be interested to know what)
The question is whether it would be technically possible for alsa to know which interface is valid?