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I have two monitors for my PC. - This problem only started recently, up until a couple a days ago it was fine. I am using the latest open source nvidia driver. The problem is that the right screen in a duplicate of the left screen. How do I fix this so that I have one left screen and a separate right screen?

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Have you changed anything at all recently? – Seth Oct 12 '13 at 0:06
up vote 0 down vote accepted

Go to "search" and type "displays", then open it. Uncheck "Mirror displays" on the right.

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Atleast that's how I fix it for ubuntu 13.04 and mint 15. – Aliquis Oct 11 '13 at 23:12
They are both already unchecked. – user194862 Oct 11 '13 at 23:12
maybe try "utility tweak" i dont know much about it though. You can get it with "run a command" – Aliquis Oct 11 '13 at 23:33

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