[ubuntu] LT3103 Front mic strange issues Karmic Koala

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http://ubuntuforums.org – Hi ! I made some tests with my front mic ( the one up to the screen ) today. I was trying to use my front microphone with skype and... it never worked. So I try to record something with the Sound Recorder installed by default with Ubuntu, and here it works. I have a lot of noise but I can hear my voice almost clearly. So I dig a little bit in alsamixer, and PulseAudio parameters but I didn't get something which works with skype. Then I plug an external microphone on the side of the laptop and there everything works perfectly... I was wondering if someone could explain my how that front mic is wired to the sound card, and how to use it. The sound card got 2 inputs ? or is it the same input switched between the front mic and the external mic when we plug something in ? Tell me if you also have some issues with you're LT3103 or some solutions :) Thanks Diffy (Hardware)