Pulse Audio Sound Levels

[Ric Moore]

On 03/13/2013 03:56 PM, Lanoxx wrote:
>
> On 13/03/13 20:12, Ric Moore wrote:
>> 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.
> The volume controller has a mic input which is controlled by the USB
> sound card and works just fine. The problem is just that I cannot use
> aux and usb at the same time. I have to physically unplug the usb cable
> to activate the aux/in and then connect my radio with the speakers.
>
> In pavucontrol in the "Configuration" tab the USB sound card is
> configured as "Analog stereo duplex", but it does not have any effect
> what I choose. The speakers are 2.1 (two satelites and one subwoofer)
> with a special volume control unit that is connected to the subwoofer
> and has a 3.5mm line out and mic input on which I have connected my
> headset and which works just fine. I have already tried all different
> kind of configurations and they had no effect so far. I just appears as
> if the aux input keeps being muted.

What does alsamixer show you?? Maybe the aux input is muted there? 
Happens. 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