Mic is not working in Ubuntu 12.04

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http://askubuntu.com – I am using Ubuntu 12.04 on an Acer C7 netbook. However, my internal mic refuses to work whatsoever I did. I tried Pulseaudio, I tried Alsamixer, I tried to play with gstreamer-properties, but with no luck. The farther I could get to was just to hear a (woshsh) sound, but I can still not hear my voice. I will need the mic for Skype 4.1 I really appreciate your being helpful. (HowTos)