[CentOS] CentOS 5 sound problems on ICH5

[John R Pierce]

Jon Jahren wrote:
> Hi
> I have installed CentOS 5 on my computer which has an Intel ICH5 sound 
> chip. The card appears as it should, and I can adjust the volume just 
> fine. However, when I try to play a sound file(.ogg for instance), 
> rhythmbox plays through the file, but no sound is heard. I've tried as 
> root, and I've tried doing cat /dev/urandom > /dev/dsp, and it's all 
> quiet.
> Output from lspci:
> 00:1f.5 Multimedia audio controller: Intel Corporation 82801EB/ER 
> (ICH5/ICH5R) AC'97 Audio Controller (rev 02)


I'm pretty sure you also need to know what codec chip is hung on that 
ICH5.  the ICH5 AC97 stuff only handles the computer interface side, 
there's an external codec chip that has the actual analog audio I/O, and 
the drivers need to know what that is.  they can be VIA, they can be 
AnalogDevices SoundMax, they can be SiS, they can be bunches of others.