MacBook does not go to sleep when plugged in since upgrading to Lion

macbookosx lionshutdownsleep

My MacBook does not turn off when I put it in sleep mode, when it is plugged in. I put the laptop on "sleep" or close the lid, but the computer stays on and stays hot! My MacBook goes to sleep fine (turned off and had pulsating white light when on battery). If it is plugged in & I put it to sleep, the screen shuts off, but the computer stays on (solid white light)!

This has been happening ever since the upgrade to Lion! Is there any way to fix this?

It shuts down fine & it goes to sleep fine when on battery. It does not go to sleep when plugged in, that is the issue! I have already tried resetting SMC & PRAM, fixing permissions, and disabled startup applications!

My friends macbook pro goes to sleep fine with Lion! What is wrong! This did not happen in Snow Leopard!

Best Answer

Same here. I resolved it by going to System Preferences, then Sharing, and disabling options there. After this closing the lid would cause my MacBook to sleep. This was the first time I saw the new sleeping led pattern :)

I was then able to restore the sharing settings, and it appears to sleep normally.

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MacBook Pro not entering Safe Sleep

You can check if safe sleep is enabled with the following command in Terminal:

pmset -g | grep hibernate

If safe sleep is enabled it should return: hibernatemode 3 or if not enabled it will return hibernatemode 0

If it returns hibernatemode 0 you can enable it by typing:

sudo pmset -a hibernatemode 3

Mac – Turn off USB power when closing MacBook lid

According to Apple Computers and Displays: Powering peripherals through USB the only way to turn off power to the USB ports is to turn off the Mac, power will remain while the Mac is sleeping.

If your Apple computer or display is powered off, no power will be provided.

A work around for this is changing what your Mac Does when you close the lid. You can reconfigure your MacBook to go into a different safe sleep mode when you close the lid, as opposed to normal sleep. This is very similar to the hibernate feature available for Windows PC and would result in USB power being off.

The only con is that you would have to press the power button to start your mac when you open it. And it would take more time to get the Mac back to where you left off at, as it reloads the contents of RAM from disk.

You can change your Macs sleep-mode as indicated in Set newer portable Macs' sleep mode provided by MacWorld.

Check the current setup

$ pmset -g | grep hibernatemode

which mode is which:

0 - Old style sleep mode, with RAM powered on while sleeping, safe sleep disabled, and super-fast wake.

1 - Hibernation mode, with RAM contents written to disk, system totally shut down while “sleeping,” and slower wake up, due to reading the contents of RAM off the hard drive.

3 - The default mode on machines introduced since about fall 2005. RAM is powered on while sleeping, but RAM contents are also written to disk before sleeping. In the event of total power loss, the system enters hibernation mode automatically.

5 - This is the same as mode 1, but it’s for those using secure virtual memory (in System Preferences -> Security).

7 - This is the same as mode 3, but it’s for those using secure virtual memory.

It appears that sleep mode 1 would enable your USB ports to be powered off when closing the lid of the MacBook.

Change the sleep mode setting

sudo pmset -a hibernatemode 1

Best Answer

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MacBook Pro not entering Safe Sleep

Mac – Turn off USB power when closing MacBook lid

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