Comment 75 for bug 438318

Running Lucid on 2.6.32-16-generic and adding the fix to "the end of /etc/modprobe.d/alsa-base.conf." from post #53 worked. After going into pavucontrol (Pulse Audio Volume Control), the Output Devices tab and changing the Internal Audio Analog Stereo Port to "Analog Speakers" from "Analog Output" or "Analog Headphones."