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Safe Sleep (hibernatemode) not working

6269 Views 9 Replies Latest reply: Aug 1, 2007 11:36 AM by Scott Dayman RSS
Mr Lizard Level 2 Level 2 (250 points)
Currently Being Moderated
May 14, 2007 12:06 AM
Having a little trouble with 'Safe Sleep'. I can't pinpoint when the problem started, but I don't have any pmu-altering dashboard widgets.

I get the usual 'reserve battery power' warning when there's few minutes left before the juice runs out. Then, the power cuts. No safe sleep at all; it's as though the battery has been yanked out.

I checked a few threads, and I've performed the 'hibernatemode' check in Terminal:

pmset -g | grep hibernatemode

The result I get is '3', which I assume is 'enabled'


My HD has got over 40gb free space remaining, so there's definitely enough room for a 'sleep image'.

Has anyone come across this, and does anyone know of any possible fixes?

Cheers in advance!

MacBook Core Duo (White) @ 2GHZ, 2GB RAM, 120GB HD   Mac OS X (10.4.9)   23" Cinema Display, 120GB USB drive, 160GB Network Drive, Bluetooth Mighty Mouse
  • Haribol Level 4 Level 4 (2,455 points)
    Currently Being Moderated
    May 14, 2007 12:17 AM (in response to Mr Lizard)
    May be try to reset it...
    sudo pmset -a hibernatemode 3
    MacBook 13'' 2.0GHz Intel Core 2 Duo 1.5 GB RAM 80GB HD, Mac OS X (10.4.9), iPod Shuffle
  • Shawn Parr Level 2 Level 2 (300 points)
    Currently Being Moderated
    May 14, 2007 6:57 AM (in response to Mr Lizard)
    I would try an SMC reset:

    1. Unplug the MB
    2. Remove the battery
    3. Hold the power button down for 10 seconds
    4. Put everything back and boot up

    When I installed the battery update, and my battery started dying early my MB wouldn't enter safesleep properly either. The SMC reset fixed safesleep. Apple shipping me a new battery fixed the early dying. Hopefully the SMC reset will fix you up.
    Macbook 2.0Ghz White 2GB RAM 100GB 5400 HD, Mac OS X (10.4.9), QS2002 933Mhz G4 768RAM 2x40GB HD
  • 777iPod Level 2 Level 2 (330 points)
    Currently Being Moderated
    May 15, 2007 1:38 AM (in response to Mr Lizard)
    You just take out the battery in sleep with out the ac adapter plugged in.
    Black MacBook Core 2 Duo 3Gb ram 160Gb HDD 120Gb external, Mac OS X (10.4.9), iPod 5.5G 80GB iPod Shuffle 2nd Gen
  • JoeyR Level 6 Level 6 (8,275 points)
    Currently Being Moderated
    May 15, 2007 5:58 AM (in response to Mr Lizard)
    Also... have you calibrated your battery? This is fairly common if your battery has not been calibrated... especially when you're talking about an ultra low battery state where your MacBook may think it has a little more time before it has to go into deep sleep than the battery can power it.
    PROBLEM-FREE BlackBook - Black 4GB Nano - Black 8GB Gen 2 Nano, Mac OS X (10.4.9)
  • konqui Calculating status...
    Currently Being Moderated
    May 15, 2007 6:30 AM (in response to Mr Lizard)
    I have the same problem and it is since the battery update.

    I do a pmu and calibrated the battery install and deinstall the update. Nothing change. So for me I hope apple will bring a new battery update asap.
    Mac OS X (10.4.9)
  • 777iPod Level 2 Level 2 (330 points)
    Currently Being Moderated
    May 16, 2007 8:54 AM (in response to Mr Lizard)
    I just calibrated mine and it goes to sleep at 7 min. I think that is defaut to make sure the battery doesn't fully discharge, if it does you may not get it back.
    Black MacBook Core 2 Duo 3Gb ram 160Gb HDD 120Gb external, Mac OS X (10.4.9), iPod 5.5G 80GB iPod Shuffle 2nd Gen
  • Scott Dayman Calculating status...
    Currently Being Moderated
    Aug 1, 2007 11:36 AM (in response to konqui)
    I finally got mine to work. PMU and Calibration didn't do it for me, but I went through a bunch of hoops before it worked again:

    1) Reset SMC (PMU)
    2) Calibrate Battery (per Apple Docs)
    3) Fully charge battery while sleeping
    4) Let sleep for 5 or so days until battery fully discharges
    5) Fully charge battery

    I tried the long sleep trick since I was leaving for vacation and didn't need the Book. When I came home, it was no longer sleeping, but it did drop into Safe Sleep. When I plugged it back in and opened it up, it reloaded memory and came out of Safe Sleep. It's working properly again.
    MDD 2x1Ghz, 12" iBook, iMac DV-SE, 12" PowerBook, MacBook, Mac OS X (10.4.10)

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