For the past few years I've been using a 2008 aluminum MacBook. The day the new airs came out I decided to switch so I purchased one to replace my well used MB. Lion has had its bugs, most of which aren't to bad, but one thing that is really annoying me is how long it takes the MBA to come out of sleep. I don't know if this is a MBA issue, or a Lion issue in general, but my MBA takes about 5 sec for the keyboard to light up, and then another 5 for the screen to light up. My old MB never took more than 5 sec. I would assume that an SSD would cause things to go lightning fast. What's causing it to take so long? Are there ways to make a computer wake up faster?


  • This happens everyday even after restart
  • The time varies slightly, but just being asleep for a few minutes it takes just as long to wake as leaving it asleep all night.
  • Typically 4-5 applications open
  • Only 50GB of 256 GB HD used, has 4GB of RAM and 1.8Ghz i7 Processor
  • 1
    so definition of eternity is 5 seconds now? ;) Aug 7, 2011 at 8:26
  • There may be a bug relating to WiFi and exiting sleep. If you disable WiFi, could you try seeing if it helps?
    – user19320
    Feb 26, 2012 at 4:14
  • Try updating to Mavericks. It solved that kind of problems on my Mac Book Air. Oct 23, 2013 at 19:49

3 Answers 3


sudo pmset -a hibernatemode 0 should disable "smart sleep" mode.

  • 1
    You should add more info on the implications of enabling this which one should be aware of before applying this command
    – Alexander
    Feb 26, 2012 at 4:55
  • What does this do?
    – Chris Calo
    May 17, 2012 at 18:32
  • Laptops normally both write the contents of the memory to the disk and keep the RAM powered during sleep. If hibernatemode is set to 0, they don't write the contents of the memory to /var/vm/sleepimage. It also disables standby mode on 10.8 and later on Macs that support it. See Do MacBooks have a true "Hibernate" option?.
    – Lri
    Aug 29, 2012 at 5:27

Well, the MacBook Air goes one step further than sleep into what Apple calls Standby mode. This is a deeper form of sleep that uses much less power and takes a bit longer to start up again. This is how Apple achieves the advertised 30 days on standby.


  • Is there a way to prevent this mode?
    – Chris
    Aug 6, 2011 at 18:25
  • 1
    You cannot disable it all together, but the MBA will not enter Standby Mode if you are connected to AC power, have a USB device or SD card attached, have any Bluetooth devices paired, or have an external display attached. support.apple.com/kb/HT4392 Aug 6, 2011 at 18:31
  • 1
    It can be disabled with sudo pmset -a standby 0.
    – Lri
    Aug 29, 2012 at 5:30

Would pmset work? Here's the Apple man page on it.

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