Re: Problem with Lenny / Intel 82801G (ICH7) and line-in

[Peter Gruener <peter.gruener@gmx.de>]

> On Fri, Oct 05, 2007 at 21:29:55 +0200, Peter Gruener wrote:
> > Hi!
> >
> > After installation of Debian/Lenny I have problems with the 
> > microphone/line-in jack of my Dell Latitude D820 using ALSA. It does not 
> > work. (In Windows XP it works without problems)
> >
> > The configuration is the following:
> >
> > Debian Lenny on 2.6.21-2-686 with DELL Latitude D820,
> >
> > 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High 
> > Definition Audio Controller (rev 01)
> >
> > alsa-base:
> >   Installed: 1.0.14-2
> >   Candidate: 1.0.14-2
> >   Version table:
> >  *** 1.0.14-2 0
> >         500 http://http.us.debian.org lenny/main Packages
> >
> > alsa-utils:
> >   Installed: 1.0.14-2
> >   Candidate: 1.0.14-2
> >   Version table:
> >  *** 1.0.14-2 0
> >         500 http://http.us.debian.org lenny/main Packages
> >
> > alsaconf tells me "Unloading ALSA sound driver modules: snd-hda-intel 
> > snd-hda-codec snd-pcm-oss snd-mixer-oss snd-pcm snd-timer snd-page-alloc."
> >
> > hda-intel Intel Corpation 82801G (ICH7 Fa....
> >
> > The hardware seems to be detected. Sound is there but recording does not 
> > work.
>
> Most probably "capture" is not activated for the relevant mixer control.
> (Yes, that is confusing about ALSA, unfortunately.)
>
> With this kind of problem I have always been most successful with a
> trial-and-error approach using "alsamixer". If you run this application
> you will get access to all mixer controls in a curses-based interface.
> You can switch between the "Playback" and the "Capture" controls by
> pressing TAB. You can then select controls with CURSOR LEFT/RIGHT,
> change volume or amplification levels with CURSOR UP/DOWN, and activate
> capture by pressing SPACE. Then it will be a matter of finding the right
> control(s) to set "CAPTUR" on, and to set volume/amp levels correctly.
> The relevant control might be called "Mic" or "Mix" or "Aux" or
> something like that.
>
> If you get stuck then you can post the output of
>
> amixer | egrep -i '^( .*capture|[^ ])'
>
> and we might be able to give more specific advice. Also tell us which
> application you use to do the recording.
>
> --
> Regards,            | http://users.icfo.es/Florian.Kulzer
>           Florian   |
>
>   


I am using audacity, there it works in the meanwhile (somehow). I had to 
select "Mic" as input source with alsamixer and audacity is using "OSS: 
/dev/dsp " as input source and  "ALSA: HDA Intel: STAC92xx Digital 
(hw:0,1)" as output device.

But with skype the recorded sound is really strange. Might there be a 
problem with codecs?

amixer | egrep -i '^( .*capture|[^ ])'   tells me:

--------

Simple mixer control 'Master',0
Simple mixer control 'PCM',0
Simple mixer control 'IEC958',0
 Capture channels: Mono
 Mono: Playback [on] Capture [on]
Simple mixer control 'Capture',0
 Capture channels: Front Left - Front Right
 Limits: Capture 0 - 15
 Front Left: Capture 12 [80%] [18.00dB] [on]
 Front Right: Capture 12 [80%] [18.00dB] [on]
Simple mixer control 'Capture Mux',0
 Capture channels: Front Left - Front Right
Simple mixer control 'Digital',0
 Capture channels: Front Left - Front Right
 Limits: Capture 0 - 120
 Front Left: Capture 94 [78%] [17.00dB]
 Front Right: Capture 94 [78%] [17.00dB]
Simple mixer control 'Input Source',0

--------


Any more suggestions?

CU
Peter