Fixed the sound

When I first installed Ubuntu, there was no sound available at all! I thought it was a matter of Ubuntu not recognizing the sound hardware or something, but the answer turned out to be more amusing... It assumed that there was an amplifier attached to the headphone jack!

This is fixed by doing this:

1. Open "Volume control" in gnome (double-click in the task bar)
   
2. goto "edit" "preference". Then, click on "External Amplifier".
   
3. You will be able to enable External Amplifier in the "Switches" tab in gnome volume manager.
4. Uncheck the External amplifier checkbox in the switches tab

...that's all folks!