Re: Problem with Lenny / Intel 82801G (ICH7) and line-in
On Tue, Oct 09, 2007 at 22:12:58 +0200, Peter Gruener wrote:
>> 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
[...]
>> > alsa-utils:
>> > Installed: 1.0.14-2
[...]
>> > 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.)
[...]
> 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.
Complex programs, such as audacity, are not the right tools to
troubleshoot hardware and driver problems (in my opinion). What happens
if you use "arecord"?
> But with skype the recorded sound is really strange. Might there be a
> problem with codecs?
What do you mean by "strange"? Over-amplified and distorted maybe?
> 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
Try to adjust "Capture" levels with alsamixer until you get a clean
recording with arecord, then you can start to worry about the additional
problems involving skype. I would begin by turning down "Digtal" (that
control is very touchy for my Intel ICH8 card).
--
Regards, | http://users.icfo.es/Florian.Kulzer
Florian |
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