[CentOS] Correctly setting up sound with Intel High Definition ICH7

[Christoph Neuhaus]

Hi Niki,

> 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)

the problem seems to be familiar with this chipset, independent from the  
Linux distribution:
  -  
http://www.linuxquestions.org/questions/linux-hardware-18/ich-7-hda-intel-631494/
  - https://help.ubuntu.com/community/HdaIntelSoundHowto


> 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:

Lots of settings:  
http://ubuntuforums.org/showthread.php?p=3796486#post3796486


> 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

It could be as easy as 'options snd-hda-intel model=lenovo' (see Ubuntu  
link) or similar, see http://fedoraproject.org/wiki/KernelHdaDriverOptions.


> Searching for "centos intel high definition sound" doesn't show much.

s/centos/fedora, good luck.


Chris