Ubuntu 12.04 without sound

I updated my Ubuntu from 11.10 to 12.04 and for my unhappiness, the sound wasn’t working.

Made a lot of tests until I realized that it was not working just the phone jack from the FRONT panel of the computer. When using by the back panel, everything was normal…

WTF?!?!?! How to solve it?

Continue reading “Ubuntu 12.04 without sound”