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
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