I had the same problem. My motherboard is the Intel D865 PERL.
Try the following:
1) Download last alsa driver (driver+lib+util files)available from www.alsa-project.org
2) Follow the instructions from
./configure --with-cards=intel8x0 --with-sequencer=yes;make;make install
mkdir -p include/linux
and continue with the instructions.
This worked for me. However, even if the sound works, I still get an error message starting kde.
Let me know...