My approach would be to download the latest kernel, unpack the archive
somewhere (such as /usr/src/linux-2.6.19 then go into the directory
and type "make menuconfig". Then build all the relevant ALSA drivers
into the kernel (i.e., as * not as M). Then do make && make
modules_install then copy the image to /boot and finally add an entry
to your boot loader.

This always works for me (using any distribution) however there should
hopefully be a less technical way of doing this, I do not have a
scientific Linux system here (I am away for Christmas) so I cannot
provide more specific instructions. Perhaps someone else
could guide you through recompiling your kernel on SL?

On 27/12/06, Francois Colonna <[log in to unmask]> wrote:
> Troy Dawson wrote:
> > Francois Colonna wrote:
> >> Hello
> >>
> >> alsaconf detects "hda intel", in fact its seems (from Windows) that
> >> it is a "Realtek hda" sound card, how to be sure ?
> >>
> >> Thanks
> >> François Colonna
> >
> > usually the best way I know of is to do a
> >   lspci
> > on the linux side.
> > Troy
> Thanks,  I did it.
>
> alsamixer gave me the answer : the card is an Intel and the  chipset a
> Realtek !
> So both are correct.
> This does not help for the sound problem anyway.
> I have read that there may be a bug in the alsa driver, how to check it ?
>
> Best,
> Francois
>