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Why is my MacBook Air slow to enter sleep mode?

825 Views 8 Replies Latest reply: Sep 28, 2012 5:43 AM by dwb RSS
GlynnOwens Calculating status...
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Sep 26, 2012 6:49 PM

My partner's goes to sleep instantly, mine takes about 30 seconds - most obvious difference is that I have MS Office installed (but not running).  I've tried resetting SMC but no benefit.  Help would be much appreciated.

MacBook Air (11-inch, Mid 2012), OS X Mountain Lion (10.8.1)
  • shldr2thewheel Level 7 Level 7 (25,345 points)
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    Sep 26, 2012 7:58 PM (in response to GlynnOwens)

    any peripherals connected?

  • davidnave Level 1 Level 1 (10 points)
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    Sep 27, 2012 7:19 AM (in response to GlynnOwens)

    I agree that it's likely a piece of software that's taking longer to go idle. MS office has an auto-updater that causes this behavior. Printer software does too. I would be sure that it's third party software by booting the computer into Safe Mode. That entails holding down the Shift key as you boot the computer. You'll know you're doing it right when you see a progress bar under the Apple logo and spinning gear during boot, and the computer will stop at the login screen, and in red it will say Safe Boot. Then test.


    Other things to consider: Does it only happen when sleeping on the the timer, or does it also happen when putting the computer to sleep from the Apple menu? And does it happen in a new user?

  • dwb Level 6 Level 6 (19,690 points)
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    Sep 28, 2012 4:11 AM (in response to GlynnOwens)

    I was just getting ready to suggest booting into Safe Mode   Among other things, booting with Safe Mode deletes a number of cache files and it might have been a very large cache or a damaged cache that was causing the slow sleep. Keep Safe Mode in mind - it is a useful troubleshooting tool.

  • dwb Level 6 Level 6 (19,690 points)
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    Sep 28, 2012 5:43 AM (in response to GlynnOwens)

    Well, as a tech I'd agree that I have many more diagnostic tools to figure out what is going wrong with a Windows machine. But I need them. I have fewer software and configuration related issues with Macs than Windows. Plus it may be just a matter of familiarity.


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