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When I try to launch it I get an error which mentions two reasons that might have caused this problem. Either there's no AMD graphics driver installed (I did install it, just not the post-release updates because they never do install.), or the driver's just not functioning properly. I only installed Ubuntu 12.04 not long ago so I'm not completely familiar with this OS yet. What do I do?

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Can you add what Catalyst exactly says to your question. or launch it from the terminal, amdcccmle – Uri Herrera Sep 6 '12 at 17:32

Try reinstalling drivers using terminal

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I just did. After I restarted it switched to old graphics mode. I had to uninstall again. Now I don't have the CCC anymore. – Eldar Sep 6 '12 at 18:27
Now you have to install the drivers again look in the section Manually installing Catalyst 12.6 . In case you want to use newer version, just enter into Google somthing like "ati driver -version- ubuntu 12.04 installing". – tikend Sep 7 '12 at 7:49

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