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sleep and wake problems in lion

221 Views 0 Replies Latest reply: May 4, 2012 11:35 PM by maxou723 RSS
maxou723 Level 1 Level 1 (0 points)
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May 4, 2012 11:35 PM

When I come back to my sleeping iMac and move the mouse, the screen is black, but as I start to move the mouse about, it's like I'm kind of rubbing out (like a pencil eraser) the screen with 1cm squares and underneath is the normal grey login screen.  I have to rub out enough so that I can see my username, then click on it to get back in.

 

How do I fix this?  This has happened ever since I upgraded to Lion.  I've redone a clean install with the same result.

iMac 21.5, Mac OS X (10.6.4)

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