I've been working on this issue for a few days now but nothing seems to be working for me. I'm using Ubuntu 9.10 installed on the Dell Latitude XT2.
I've tried to change sound settings and tried different output ports with headphones. I also found a thread on changing the /etc/modprobe.d/alsa-base file but I couldn't get it to work. So I find myself asking the Ubuntu community for help.
Here's a link on the information about my configuration.
Any help would be appreciated.