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I have a problem. Sometimes my Ubuntu 12.04 freezes up, the desktop gets black, then you can see it again but can't control the mouse and Unity 3D elements are missing sometimes. what can that be? It occurs randomly, like when browsing the web.

Thanks

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closed as off topic by jrg Apr 30 '12 at 22:24

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

    
Welcome on Ask Ubuntu, thetattoo! Could you please edit your question to tell what kind of specs your computer has? Furthermore, does Unity 2D work when you select it from the login screen? –  Agmenor Apr 30 '12 at 0:13
    
Welcome to Ask Ubuntu! This question should instead be filed as a bug report, thanks! Instructions here. –  Jorge Castro Apr 30 '12 at 21:37
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Same problem. Last time I switched to "ubuntu 2d" and all worked fine. So I controlled video graphic 3D acceleration and it seems to work.

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