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My Ubuntu's Firefox browser's sub menus disappears after the screen saver is active. When I click on a menu topic like 'File' the sub menu appears, but when I move the mouse to select a menu item, the sub menu disappears. I tried to disable the display hardware acceleration property, but it did not help.

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By the way, this happens on all the computers running Ubuntu 11.04 I've tried (about 6). –  Alin Andrei Jun 2 '11 at 13:57
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migrated from stackoverflow.com Jun 2 '11 at 12:18

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closed as too localized by Bruno Pereira Mar 6 '12 at 8:05

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2 Answers

I don't know why this happens (it happens to me too), but if you minimize Firefox and then maximize it again, the problem will go away.

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It seems to be a problem with X11

Did you tried to replace compiz?

compiz --replace

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that would be 'nice' (sic) advise if his graphics card doesn't support compiz in the first place :) now that is inceasingly unlikely nowadays, BUT we are talking about a user who is experiencing display trouble to begin with! –  sehe Jun 2 '11 at 11:02
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