Re: how to make all 8 channels play in a USB sound card ?

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Tue, 06 Nov 2012 08:52:32 +0100 от Clemens Ladisch <cladisch@xxxxxxxxxxxxxx>:
> Sergei Steshenko wrote:
> > the card is shown as 7.1. so an 8 channel playback should be possible
> 
> Does speaker-test work?
> 
> > I've enabled playback through "Line", I hear nothing when headphones are plugged into line.
> 
> I'd guess the "Line" controls are for playback from the line input.
> 
> 
> Regards,
> Clemens
> 


I didn't run "speaker-test", I was using 'sox'. As I wrote, I _can_ get sound out of every default output channel of the 6 available: "FRONT OUT", "REAR OUT", "CEN/BASS OUT".

Please pay attention that in


"
numid=6,iface=MIXER,name='Speaker Playback Volume'
  ; type=INTEGER,access=rw---R--,values=8,min=0,max=197,step=0
  : values=197,197,197,197,197,197,197,197
  | dBscale-min=-36.93dB,step=0.18dB,mute=0
"

there are exactly _eight_ (8) values.

Again, my question is very specific: what controls should I set in order to make a default input (either "Mic" or "Line") an output - because there are just 6 (3 x 2) default outputs.

Thanks,
  Sergei.
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