[Trac #711] New ALSA mixer setting is needed

[Zarro Boogs per Child]

#711: New ALSA mixer setting is needed
--------------------+-------------------------------------------------------
 Reporter:  Nat     |        Owner:  J5     
     Type:  defect  |       Status:  new    
 Priority:  normal  |    Milestone:  BTest-2
Component:  distro  |   Resolution:         
 Keywords:          |  
--------------------+-------------------------------------------------------
Changes (by Nat):

  * summary:  Volume Slider and Alsamixer should be rescaled => New ALSA
              mixer setting is needed
  * milestone:  Untriaged => BTest-2

Old description:

> Using the volume slider on the keyboard there is currently 4 levels that
> control the Master volume of alsa, those 4 levels are 0, 29, 61 and 100.
> The problem is that at 100 you can clearly hear a buzz from the speakers
> when nothing is playing.  So in order not to hear this buzz you need to
> be at level 3 (61) but it's too low.
> Therefore I suggest a new scale :
> 0 30 60 85
> In order to regain the loss of volume I suggest raising the PCM slider to
> around 85 (not too high as it will also distort)

New description:

 After talking with J5 on irc, I will take care of finding optimal settings
 for the alsa mixer on the XO and provide an alsa.conf file.  The problem
 in 226 is that the microphone is unmuted in the playback section which can
 cause feedback (and it produces an audible buzz in the speakers)  The
 volume slider for the microphone doesn't affect the ability of the
 soundcard to actually record sound (the slider that controls the record is
 in the Capture section).  I will attach a config file ASAP.

-- 
Ticket URL: <http://dev.laptop.org/ticket/711#comment:1>
One Laptop Per Child <http://laptop.org/>