No sound in Slackware

Hello, I'm in Slackware 12.1, and the audio system is not functional. With all other distributions, the audio output works, my distribution is installed on the same hard disk that Vista, in ironing Vista sound to work.

Alsamixer runs correctly, I can manipulate sliders. KDE 4.1 fully recognize my hardware, the mix window is functional.

I did an update of my system. Before it, the sound functioning properly. So I think is an incompatibility somewhere.

I continue to look, thank you if you have any idea.

you updated via the command line: # Root install dpkg or from a media that you burned ?

I used the slackpkg upgrade-all to make a comprehensive update Slackware, myself connecting to a remote server.

I finally reinstalled Slackware, now sound works perfectly. I will do my updates gradually, I think there's a conflict following the updated kernel.

It remains for me to install KDE 4.1, and finally enjoy my distribution