Sound for Linux using ASUS P5W DW

After trying many tutorials scattered around the web with no luck, the problem was discussed at one of our regular SOSLUG meetings, and found that the Dell Inspirion 1521 shares a similar audio chipset that requires the Intel HD driver to function. The following is taken from the Dell 1521 page.

You need to blacklist the "snd-hda-intel" kernel module from being loaded automatically by appending it to /etc/hotplug/blacklist

Reboot.