[alsa-devel] [usb-audio] VIA/Audinst HUD-mx2: One of two PCM device is available for playback

Clemens Ladisch clemens at ladisch.de
Sat Jul 6 16:30:34 CEST 2013

Takashi Sakamoto wrote:
>> This device has multiple alternate settings for PCM and AC-3 playback.
>> The driver creates multiple devices for those because it has no other
>> mechanism to distinguish them.
> Can we realize whether the PCM device for AC-3 stream (hw:0,0) works
> or not from the output of lsusb?

If the device declares that it supports AC-3, it'd assume that this will
work (if the data actually is AC-3).

>>    defaults.pcm.card 0
>>    defaults.pcm.device 1
> The card ID differs depending on the user's system.

defaults.pcm.card "HUDmx2"


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