Pulse Audio Sound Levels

[Lanoxx]

On 13/03/13 21:23, Ric Moore wrote:
> 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
>
Here is what I do:
alsamixer -> F6 -> "USB Multimedia Audio Device" -> F4 (Capture): I can 
see three categories: "Line", "Mic" and "S/PDIF in" the first two (line 
and mic are set to 94), the "S/PDIF" section does not have a volume bar 
to change. Additinally the all sections show "L Capture R" in red letters.

When I open pulse audio in the recording tab for the Usb sound card I 
can also choose between Line and Microphone and when I choose Line and 
connect the radio, then I can see the sound bar juming around 80%-90%, 
when I unplug the cable, then the bar drops to 0. But still no sound. 
Any further ideas?

Thanks a lot for your help.
>
>