I love the auto hibernate after 1 hour feature.

Discussion in 'MacBook Air' started by yegon, Nov 17, 2010.

  1. yegon macrumors 68030

    Oct 20, 2007
    I'm fully aware it's NOT in any way revolutionary - I've been using hibernate like feature via Terminal/SmartSleep on macs for years, and it's been inbuilt in Windows seemingly forever - but as it's default it's a whole lot more convienent. Previously, if I was going out all day I'd always leave my mbp plugged in as it'd otherwise drop a couple per cent charge an hour during sleep. I did hibernate the old mbp occassionally but that results in a reasonably significant boot time so I rarely bothered with it.

    The MBA, unplugged and unused for 8hrs, dropped 1% and was functioning in less than 3 seconds :)
  2. Over Achiever macrumors 68000

    Over Achiever

    Jul 22, 2002
    Toledo, OH, formerly Twin Cities, MN
    Does the computer turn on when auto-hibernating, ie fan/screen? I wouldn't want my computer randomly turning on in my backpack, even just to hibernate.
  3. neteng101 macrumors 65816

    Jan 7, 2009
    It hibernates after 1 hour? While just on battery, or plugged in too?
  4. yegon thread starter macrumors 68030

    Oct 20, 2007
    Not a clue, but I doubt the fans or screen are involved in the process. It'll just be some kind of further power down at a guess or maybe it writes something to the flash, in which case it'd be a non-issue given it's solid state.

    Good point, dunno. Given the speed difference it's largely an irrelevance I suppose.
  5. KPOM macrumors G5

    Oct 23, 2010
    Just while it's on battery.
  6. neteng101 macrumors 65816

    Jan 7, 2009
    Thanks - I have to play with it to see how it behaves - most of the time when I have it off, its overnight and connected to power. Just wondering what the hibernate resume is like. :)
  7. silverblack, Nov 17, 2010
    Last edited: Nov 17, 2010

    silverblack macrumors 68030


    Nov 27, 2007
    I changed my MBA's sleep mode to "0" according to the following article to save FS space. Does that mean my MBA no longer hibernates after 1 hour like described by OP?

    What is the default sleep mode for the new MBA? mode 3?


    Would it go back to the "auto hibernating after 1 hour" after I set the sleep mode back to 3?
  8. foodle macrumors 6502

    May 14, 2008
    Pennsylvania, USA
    No. In the default sleep mode, your mac will save the memory contents to disk/SSD right when you go into sleep. So later, if it wants to drop into hibernate, it will just power down the DRAM memory, but the memory contents had already been saved to disk/SSD earlier.

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