Pulse Audio Sound Levels

[Basil Chupin]

On 15/03/13 08:03, Ric Moore wrote:
> On 03/14/2013 10:25 AM, Basil Chupin wrote:
>> On 15/03/13 00:14, Lanoxx wrote:
>>>
>>> On 14/03/13 01:24, Ric Moore wrote:
>>>> On 03/13/2013 07:35 PM, Lanoxx wrote:
>>>>>
>>>>> On 13/03/13 21:23, Ric Moore wrote:
>>>>
>>>>>> 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?
>>>> Yes, while you see the pulsing record level, you know you have input.
>>>> So, while the radio is plugged in, chose "playback" and the playback
>>>> device should have a drop-down selection. It's not always readily
>>>> apparent. But, click on the device in use and you should see a
>>>> selection. Pick the output you want. See if that works.
>>> Here are two screen shots from my current configuration. I'm not sure
>>> what else I could activate in alsamixer [1]. The second section allows
>>> me to choose between "Line", "Mic" and "S/PDIF" and changing it has no
>>> effect to the ouput. The other sections are all on maximum. In
>>> Puluseaudio [2] in the Port dropdown i can only choose "Speakers" and
>>> the sound is already at 100% and not muted.
>>>
>>> [1] 
>>> http://imageshack.us/photo/my-images/823/screenshotfrom201303141.png/
>>> [2] 
>>> http://imageshack.us/photo/my-images/15/screenshotfrom201303141.png/
>>
>> To begin with, Line and Mic are not activated.
>>
>> The only active channels are Speaker and some mysterious and blank,
>> black space on the right-hand side.
>
>
> Doesn't he also need to turn OFF the HDMI output since that is not in 
> use??

Having it on even though not being used won't do anything any harm 
UNLESS there is some incampatability with some other channel. Which is 
why I told the OP to always use F6 to see ALL the channels, and if 
something is not working correctly then switch on/off channels until it 
all works.

I found that different cards even from the same manufacturer (I always 
use Creative Sound Blaster) need different channels to be on or off 
before it all works.

> Do that in configuration in pavucontrol, use the HDMI drop down box 
> set to none or off ... Ric

As we know, pulse sits on top of alsa. You first get alsa to 
activate/deactivate channels after which you can then use pulse. I mean, 
it's no use trying to get pulse to turn up the volume on a channel when 
that channel is not made active by alsa.

BC

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