Sound has never worked with Ubuntu on this laptop. However, the sound works with other linux distros.

I ran

Code:
ls -latrh /home/johndoe/.pulse
and received this

Code:
total 224K
lrwxrwxrwx  1 johndoe johndoe   23 2012-03-19 17:57 37bc9dadb1f660d0680bcac44f5cc2d6-runtime -> /tmp/pulse-U1PasHqE5Gvv
drwx------  2 johndoe johndoe 4.0K 2012-03-19 17:57 .
drwx------ 37 johndoe johndoe  12K 2012-03-19 18:23 ..
-rw-r--r--  1 johndoe johndoe  24K 2012-03-19 18:38 37bc9dadb1f660d0680bcac44f5cc2d6-card-database.tdb
-rw-r--r--  1 johndoe johndoe  60K 2012-03-19 18:38 37bc9dadb1f660d0680bcac44f5cc2d6-device-volumes.tdb
-rw-r--r--  1 johndoe johndoe   42 2012-03-19 18:38 37bc9dadb1f660d0680bcac44f5cc2d6-default-source
-rw-r--r--  1 johndoe johndoe   43 2012-03-19 18:38 37bc9dadb1f660d0680bcac44f5cc2d6-default-sink
-rw-r--r--  1 johndoe johndoe  72K 2012-03-19 18:38 37bc9dadb1f660d0680bcac44f5cc2d6-stream-volumes.tdb
Not sure if running that code was helpful to anyone. This is a fairly new installation and I haven't really modified other than updating and upgrading.