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MBP won't stay asleep with ext monitor

hehe299792458

hehe299792458

macrumors 6502a
Original poster
Dec 13, 2008
783
3
I have an external monitor (old LG model) connected to my 2011 MBP via mini Displayport to VGA connector. When I close the lid, the MBP goes to sleep, but after about 5-10 minutes and won't go back to sleep unless I open the lid and close it again. I've found my computer overheated almost after an entire night running with the lid closed. is there any way to make sure the computer stays asleep without disconnecting the external monitor? I used 10.6.7 with all updates applied.
 
With the external display, your notebook goes into Clamshell mode when you close the lid. It's a feature, not a problem.

I don't know if there's a way to turn off the Clamshell mode, since I have no interest in turning it off. You might just have to get used to unplugging the display adapter before closing the lid.
 
hehe299792458 said:
I have an external monitor (old LG model) connected to my 2011 MBP via mini Displayport to VGA connector. When I close the lid, the MBP goes to sleep, but after about 5-10 minutes and won't go back to sleep unless I open the lid and close it again. I've found my computer overheated almost after an entire night running with the lid closed. is there any way to make sure the computer stays asleep without disconnecting the external monitor? I used 10.6.7 with all updates applied.
Click to expand...

Are there any other peripherals connected to the macbook, besides the display? If a mouse or keyboard is present, a slight jiggle of your desk probably wakes your computer from sleep and makes it enter clamshell mode.

Also, your computer did not overheat as you say. If it had, it would've shut itself down to prevent damage to internal components, since you found it awake, it wasn't overheating.
 
deadwulfe said:
With the external display, your notebook goes into Clamshell mode when you close the lid. It's a feature, not a problem.

I don't know if there's a way to turn off the Clamshell mode, since I have no interest in turning it off. You might just have to get used to unplugging the display adapter before closing the lid.
Click to expand...

I believe the mode you're referring to is outlined here: http://support.apple.com/kb/ht3131

However, in that article, Apple says the computer would still go to sleep with an external monitor attached, but that if you want to use it in ClamShell mode, you have to wake up the computer again.

snaky69 said:
Are there any other peripherals connected to the macbook, besides the display? If a mouse or keyboard is present, a slight jiggle of your desk probably wakes your computer from sleep and makes it enter clamshell mode.

Also, your computer did not overheat as you say. If it had, it would've shut itself down to prevent damage to internal components, since you found it awake, it wasn't overheating.
Click to expand...

I tried both - with peripherals and without peripherals. Neither worked. And without the external monitor attached, the computer sleeps fine with a mouse.
 
hehe299792458 said:
I believe the mode you're referring to is outlined here: http://support.apple.com/kb/ht3131

However, in that article, Apple says the computer would still go to sleep with an external monitor attached, but that if you want to use it in ClamShell mode, you have to wake up the computer again.



I tried both - with peripherals and without peripherals. Neither worked. And without the external monitor attached, the computer sleeps fine with a mouse.
Click to expand...

That is very odd.
 
Last edited:
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