I'll have to get an 11.04 distro. I've read a lot of posts of people having the same problem in 11.04 where their built in mic won't work on the same laptop. Then they post about some dell-m4-1 fix worked for them, but they don't explain how it works. I've read about people doing things with PULSEAUDIO and ALSA drivers, but they don't explain anything at all, they just post that they fixed it.
This is where I found the closest to fixing my issue, but the person doesn't really explain to where I can understand it. Link