Re: [gentoo-user] Anyone get Acer laptop internal microphone working in Gentoo?

[Mick]

On Friday 18 February 2011 09:45:44 Mick wrote:
> On Sunday 13 February 2011 22:10:42 Walter Dnes wrote:
> > On Sun, Feb 13, 2011 at 12:18:40PM +0530, Yohan Pereira wrote
> >
> > > did you add alsasound to the boot process?
> > >
> > > i went 6 months trying to figure out what was wrong with my microphone
> > > until i realised that i forgot to do that!
> > >
> > > also unmute the microphones using alsamixer (in alsa-utils) like
> > > Hung sugested.
> > >
> >   I had already unmuted everything before posting my question.  With
> >
> > enough microphone boost, I have a hissing noise.  I didn't know about
> > alsasound being a daemon until today.  With alsasound running, mencoder
> > and ffmpeg and arecord now *THINK* that they are recording a sound
> > channel.  That's an "improvement", because they used to say "noaudio"
> > before.  But still nothing gets recorded.  Here is a sample command I
> > tried.
> >
> > arecord -f cd -t wav -c 2 -D plughw:0 foobar.wav
> >
> >   Maybe I should go and buy an external microphone already.
>
> I do not have your hardware, but on my laptop I could not get the
> microphone to work until I switched on the digital capture and selected
> "Digital" under Input Source in alsamixer.  For some reason it would not
> work with any other setting.

Perhaps because there is no analogue audio capture on my machine ... ?

$ cat /proc/asound/devices 
  2:        : timer
  3: [ 0- 0]: digital audio playback
  4: [ 0- 0]: digital audio capture
  5: [ 0- 0]: hardware dependent
  6: [ 0]   : control
  7: [ 1- 3]: digital audio playback
  8: [ 1- 0]: hardware dependent
  9: [ 1]   : control
 10:        : sequencer

HTH.
-- 
Regards,
Mick