Pulse Audio Sound Levels

[Basil Chupin]

On 15/03/13 17:04, Ric Moore wrote:
> On 03/14/2013 10:13 PM, Basil Chupin wrote:
>> 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.
>
>
> Exactly... isn't that what I said before? But, pulse will try to use a 
> device you have configured, so if the HDMI is not in use, best turn it 
> off, so pulse never attempts to use it. :) Ric

If pulse is stupid enough to suddenly decide to use HDMI when it has no 
need to use it then one can make a case for having alsa switch off that 
channel so as not to have pulse confuse itself into a state of apoplexy 
:-) .

(As you know, I just LOVE pulse and its running mate, 
pavlovsdogconditioning - err, sorry, pavucontrol :-D .)

Next point....... 8-)

BC

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