On 07/05/11 16:22, David wrote: > Dear Experts > > I have been unsuccessful getting the sound to work on a HP Mobile > Workstation HP 8540w. > > Here's a brief rundown of where I am > > I did a clean new install of Centos 5.6 from DVD, using the Gnome > Desktop option and no optional modules. > I enabled the firewall, but disabled SELINUX. > > I installed three files from elrepo to make the wireless adaptor > work, and specified the video adaptor using the Gnome -> System -> > Preferences -> Display panel. > Hi David, If you're already familiar with elrepo then I'd suggest you try their updated alsa sound drivers. yum --enanlerepo=elrepo install kmod-alsa and reboot. Also, don't forget to check your sound device isn't muted. The ALSA docs state: Note: All mixer channels are muted by default. You must use a native or OSS mixer program to unmute appropriate channels (for example a mixer from the alsa-utils package).