I have a macbook pro Mid 2012 model (9,1) I recently installed Ubuntu 13.10 and fairly new to linux. Everything works but the microphone I tried to do a test call on skype and it doesnt work.
I am attaching a screenshot on what I ab able to see in the drop down list when I go to micrphone settings.
Screen shot of my Skype Mic Settings - Tried a few of them but didnt work, just giving a heads up.