[pulseaudio-discuss] [PATCH] alsa-mixer: More output modes for SB Omni Surround 5.1 and cleanup

[Nazar Mokrynskyi]

30.05.18 19:16, Tanu Kaskinen пише:
> Solving this for any 7.1 or 5.1 card would require first testing if the
> card can be opened with lesser number of cards, and if not, then
> configuring the device with some silent channels. I don't know if the
> alsa configuration syntax allows this kind of conditionality.
> PulseAudio's configuration system doesn't support this.

Approach with auxX channels that you sugguested previously works fine and it feels like should be applicable to any device.
Hence there is no need to open device with lesser number of channels if it doesn't support that, just emulate it.
It should be nice to the user, doesn't really matter how exactly it is implemented internally.

Sincerely, Nazar Mokrynskyi
github.com/nazar-pc