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I just got ubuntu 12.04 and the graphical options were working fine with one monitor.

After installing the second monitor there are many glitches and issues. Too many, sadly. I am asking here about one in particular:

If I execute: Displays under System settings I get the error: "RANDR extension is not present".

Sometimes after moving windows or switching workspaces I get an error saying that compiz crashed too.

Any thoughts/solutions on that?

I am using: GeForce 9400 GT, 512 MB Nvidia dryver: 295.40

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After all this time this problem is still present and I think it may be related to this other question askubuntu.com/questions/159545/… –  quinestor Sep 13 '12 at 21:42
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1 Answer

Use Nvidia-Settings and enable twinview. Apart from seeing noise in video player windows after resume from hibernate I experience no issues on my notebook with a 9400 chip.

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