If you, like me, microphone not working in Skype and other applications works, then do the following1. Set pavucontrol
sudo aptitude install pavucontrol2. Open the settings
Go to Input device, zhmakaem to lock(to left and right are moved apart) and set right to 0.3. In your skype settings uncheck the checkbox c "allow skype to adjust mixer levels"
After these simple actions, the microphone in Skype started to work.