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les24preludes

macrumors regular
Original poster
Feb 6, 2011
120
5
I have a 2009 running 5.1 Sierra. Cinema display HD LCD Resolution: 1920 x 1200

My Mac display switches off after around 8 hours in the morning while I'm asleep. Won't start with mouse or keyboard, or if you switch the computer off and on again. Only way to restart it is to disconnect and reconnect the screen connector to the Mac Pro. This seems to boot up the screen again.

I'd like to fix this - how do I do that please?
 
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