I am running Ubuntu 10.10 on an Acer 5739G, I am very new to linux, started using it in college for some basic networking and thought I might as well set it up on this old thing to see if I can learn the ropes.

Having a lot of difficulty understanding ALSA, I have uninstalled it, reinstalled it, and installed official linux Realtek HD audio drivers, but whilst before it said I had Intel HD Audio, now it does not detect any devices, so I have absolutely no idea where to start and would appreciate any help offered!