[alsa-devel] Intel HDA / AD1986A problems

[Takashi Iwai]

At Tue, 21 Aug 2007 21:45:52 -0400,
Peter Skensved wrote:
> 
> On Tue, Aug 21, 2007 at 02:34:22PM +0200, Takashi Iwai wrote:
> > At Mon, 20 Aug 2007 22:27:40 -0400,
> > Peter Skensved wrote:
> > > 
> > > 
> > > 
> > >  Configuration : Lenovo 3000 N100 laptop with Intel HDA / Anlog Devices AD1986A
> > > soundcard running CentOS5.0 with 2.6.18-8.1.8.el5 kernel ( uses 1.0.12rc1 based
> > > alsa driver ).
> > > 
> > >  The driver works with the model=laptop-eapd option except for a few things :
> > > 
> > > 1)  Plugging in an external headset will not mute the internal speakers ( has to be done
> > > manually in alsa-mixer )
> > 
> > That's an unimplemented feature.  It shouldn't be too hard to add it
> > if you help debugging well (i.e. you can build and test drivers from
> > HG tree without hitch).
> > 
> 
>  Ok - I'm willing to give it a try. Do I need development version of theh library
> and the utilities as well ? 

Recommended, but not mandatory.

> > > 2)  The PC speaker ( bell ) appears to be permanently muted.
> > 
> > Partly intended (as I dislike it ;)
> > 
> 
>   It is nice to have the option ...

Another opinion :)

> > > 3)  The external microphone input does not appear to be working no matter what I do.
> > 
> > Do you mean for recording or analog loopback?
> > 
> 
>   Yes - for recording. I was hoping to get it to work well enough to use skype -

Note that recording and analog-loopback are different things.

> > > 4)  When recording from the internal microphone the level is very, very low and almost
> > > drowns in static noise.
> > 
> > There are "Mic Boost" and "Front Mic Boost" mixer volumes.
> > 
> 
>  Not with model=laptop-eapd  - my alas mixer only shows Master, PCM, Mic, Capture, Mix,
> External Amp and Internal Amp

The Mic Boost control was added _after_ 1.0.14 release.
(Correction in the above text: Front Mic Boost doesn't exist for
AD1986A but for other codec.)

So, please try HG version first.  Then let's debug further.


Takashi