Pulse Audio Sound Levels

[Ric Moore]

On 03/13/2013 02:09 PM, Lanoxx wrote:
> Hi,
>
> I have a sound system from Teufel (Concept C 200) which has a built in
> USB sound card and an analogue aux input. When I connect the USB cable
> to my computer and the aux cable to my radio, then the sound of the
> radio does not play. When I unplug the USB cable the sound from the
> radio starts playing immediately. I have found out from the hardware
> manual that the sound card is able to control the aux output and mute it
> or control the volume. On windows it is possible to simultaneously
> enable both usb and aux inputs (see [1]). I have not found any way to do
> the same in Ubuntu so far and I would like to know if this is a bug (or
> missing feature) in which case I would report it on launchpad, or if I
> simply haven't found the right option.
>
> I have already tried to use alsamixer and pavucontrol. In alsamixer i
> can see that the usb sound card has separate "speaker" and "line"
> devices, but changing the volume does not affect the output. In
> pavucontrol there is simply no way to see the difference between
> "speaker" and "line" as there is only a single volume control for the
> usb sound card.

Pulse runs on top of Alsa. IF alsa looks good, then pulse should reflect 
that. When you run pavucontrol, did you go into the "Configuration" tab 
and set up the USB sound card? Is it stereo (or 4.0 or 4.1 or 5.0 or 
5.1, etc) output and ~no input~?? Then you should be able to set up that 
aux mike input as well, if ALSA sees it. I'm guessing it would be set to 
output/none input/"mono", if you have no stereo input.

  Ric



-- 
My father, Victor Moore (Vic) used to say:
"There are two Great Sins in the world...
..the Sin of Ignorance, and the Sin of Stupidity.
Only the former may be overcome." R.I.P. Dad.
http://linuxcounter.net/user/44256.html