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MythicFrost

macrumors 68040
Original poster
Mar 11, 2009
3,944
40
Australia
Hi,

My dad has a 30" ACD and a 24" LED display (Apple's), however, they just go black sometimes.

Sometimes when he boots up the 30" will stay black, other times it'll be the 24". Sometimes when he wakes from sleep the same thing'll happen, and again, just while the computer is on. Usually a restart will fix it.

Any thoughts? I've run Tech Tool Deluxe and it says the GPU is fine. The 24" is connected with an adaptor. He has an 08 Mac Pro dual @ 3GHz, 24GB RAM, GTX 285 1GB.
 
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