[CentOS] Correctly setting up sound with Intel High Definition ICH7
contact at kikinovak.net
Sun Nov 23 20:51:11 UTC 2008
Earlier this day I started a thread about Skype not working with
outgoing sound. Now I wonder if it's not a problem with my soundcard. I
had a vague suspicion about this, but since it's way off the original
topic, I decided to start a new thread about this.
Here's what the soundcard looks like:
[root at grossebertha etc]# lspci | grep -i audio
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High
Definition Audio Controller (rev 01)
Actually plain sound (output) works OK. I can use XMMS, MPlayer, VLC and
the likes without any problem.
On the other hand, when I try to record sound over the soundcard, the
result is quite fuzzy, full of distortions. I tried to fiddle with
alsamixer to get rid of the distortions, but to no avail. Here's what I
did to record sound over the mic:
$ arecord > ~/test.wav
Now in the past I configured a laptop with an ICH sound card on it, a
small ASUS. I spent like whole afternoons googling and searching through
forums, until some day I stumbled over the solution. I had to add
something to /etc/modprobe.conf, something like:
alias snd-card-0 snd-hda-intel
options snd-hda-intel model=3stack
... and all of a sudden sound worked.
Now maybe there is also a magic line for my new machine (a lenovo
desktop PC) that makes the soundcard work correctly for the microphone?
But where do I get that information? Guesswork? Google again for a week?
Searching for "centos intel high definition sound" doesn't show much.
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