I can't get my microphone working on Ubuntu 11.10, I tried all the hardware profiles in the audio settings. without any success.
I am sure that i don't have any issue with my mic or input since I have dual boot and I got it working on windows.
try going into Terminal (CTRL+ALT+T) and type
The default view in alsamixer is master levels, so it might be best to press F4 to show capture levels. Then (on mine anyway) whenever I have restarted my computer internal mic level is 0 - try using the left/right arrow keys to highlight internal mic, up and down to choose level (press h to get a list of keys to adjust settings)