I installed Redhat 9.0 on my IBM 300PL box and everything seemed to be fine.

But when I goto System Settings> Soundcard Detection, gnome says no soundcards were detected.

And when I goto Sound & Video> Volume control, I get a message saying "Invalid mixer device" and the details say: unable to open /dev/mixer... make sure that you have permission to open '/dev/mixer' and that you have sound support in your kernel.

And finally, if I goto System Setting> Hardware Browser and look under the Sound cards tab, it says:
--Selected Device--
CrystalAudio:Disabled
CrystalAudio:WSS/SB
--Device Information--
Manufacturer: Unknown
Driver: cs4232

Any help would be much appreciated.

Strange.... have you tried running kudzu from a command line?

I also receive a similar error message but still have no idea of how to solve it. I think we need drivers.

I installed Redhat 9.0 on my IBM 300PL box and everything seemed to be fine.

But when I goto System Settings> Soundcard Detection, gnome says no soundcards were detected.

And when I goto Sound & Video> Volume control, I get a message saying "Invalid mixer device" and the details say: unable to open /dev/mixer... make sure that you have permission to open '/dev/mixer' and that you have sound support in your kernel.

And finally, if I goto System Setting> Hardware Browser and look under the Sound cards tab, it says:
--Selected Device--
CrystalAudio:Disabled
CrystalAudio:WSS/SB
--Device Information--
Manufacturer: Unknown
Driver: cs4232

Any help would be much appreciated.

Ok, I figured it out and it was too easy. But reading this forum is what helped.
I simply typed in sndconfig from root and the module walked my through it.