As above. I tried alot of the solutions i found in the forum but have had no success. Sorry i'm a bit of a newbie with linux!!
I have that same laptop and had the same problem:
If it doesn't work, open a terminal by opening the Dash and typing
Restart computer.(The change only take place when you restart.) Thanks to our friend Karl for this.
protected by Community♦ Feb 27 '13 at 4:49
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