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Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

Open lid - 1 monitor doesn't wake up


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wheelguy12

 
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When I open my 13" 2011 MBP after it has been sleeping all night, the internal MBP monitor doesn't wake up.

I have 2 external monitors attached, and they wake up, but the internal monitor doesn't. I have to run "detect displays" to get it running again.

When I put it to sleep for a short timer, all 3 monitors awake like they should. It is only after leaving it asleep for some time that the MBP monitor stops waking up.

The 2 externals are...
1. 27" Cinema connected to the thunderbolt port.
2. 23" Connected to a USB+Video hub through one of the MBP USB ports.

Is there perhaps a setting I can tweak to ensure all 3 monitors awake?
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tambalpanci

 
Member Since: Apr 23, 2011
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maybe just put the mac into sleep mode , but don't close the lid .. is it possible ?
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wheelguy12

 
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I found the cause, but dont know the remedy. When the Mac lid is closed over night, something activates the external bluetooth magic pad. Maybe a fly lands on it, a bit of dust touches it, etc. This causes the 2 external screens to activate but keeps the internal screen off because the lid is closed. From that point forward, the internal stays off.

Any way to tell the Mac to ignore the external pad when sleeping?
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wheelguy12

 
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Found the answer - System Preferences > Bluetooth > Advanced > uncheck "Allow bluetooth devices to wake this computer
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