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After installing the on my Ubuntu 12.10 laptop, my maximum resolution is 1024x768.

My GPU is ATI Radeon x1200 is integrated in my motherboard. I can see the up toolbar and the left toolbar with the 1024x768 resolution. And the compiz can't run.

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Try the 'xrandr' commands listed [in this askubuntu question][1]. [1]:… – Clive van Hilten Jan 19 '13 at 14:42
When I type the command 'xrandr', I get it "Can't open display"! – KostasC Jan 19 '13 at 14:53
I'm not running 12.10 (am on 12.04 LTS), but if you hit the super key (i.e. the Windows key if you a Windows keyboard as most of us have) and then type 'Drivers', you will get to the drivers menu. Can you roll back to the previous driver, or is it the case that you installed because your graphics card isn't supported by 12.10 out of the box? – Clive van Hilten Jan 19 '13 at 16:18
Thanks for your response guys, I did as you said nothing is appear in my screen! – KostasC Jan 19 '13 at 17:56
Why did you install ? Can you hit the Super key then type Settings, then click the Displays button? Can you get to a terminal by using the CTRL+ALT+F1 combination? You can get back to the GUI desktop by using the CTRL+ALT+F7 combination. – Clive van Hilten Jan 20 '13 at 12:44
up vote 0 down vote accepted

To remove the wrong driver is follow the instructions from here (link)[] under the Title "After installing drivers from ATI binary"! Thanks for your help!

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