Re: [alsa-devel] iec958 switch uneffective while playing ac3 stream

Dag Lem dag@nimrod.no writes:

Did you try my workaround cookbook?

1. Turn off IEC958 in alsamixer.
2. Play and interrupt a 44.1kHz PCM with aplay.
3. Turn on IEC958 in alsamixer.
4. Play AC3 stream.

Yes ! It works !

Now I have a lead ( and a trace of all verbs sent to the codec).

I have also read while googling that the "WAV volume" in Windows drivers must be set to max in order for S/PDIF output to work. I assume this is the same as PCM volume in ALSA.

Currently, it works while PCM is at 82 (according to alsamixer)

Thanks for the tip.