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Much slower wake-up from sleep since upgrade to ML

78101 Views 191 Replies Latest reply: Nov 29, 2013 8:56 PM by whappen\'d? RSS
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Jeremysimpsons Calculating status...
Currently Being Moderated
Jul 28, 2012 10:30 AM



I am running Macbook Pro Retina and just upgraded to Mountain Lion. Everything is working fine except I find a much slower wake-up time when I open the lid.

On Original Lion the laptop was always waking up in less than 1 s. Now it's systematically more than 5.


I am wondering if anyone has a similar behavior and if this can be a ML issue?


I wish not to have to reinstall ML from scratch having to restore so many applications and settings...


I have tried PRAM reset but no help.







MacBook Pro with Retina display, Mac OS X (10.7.4)
  • derjungewilde Calculating status...

    I have the same Problem. Did you have this Problem under LION too?

  • E-Dubb17 Calculating status...

    Same problem here. Under Lion, my Retina MBP woke from sleep in ~1 second, but now takes consistently 5-10 seconds with ML. Even with no applications running, the wake time is suffering.


    I wonder if this is a bug or due to one of the new features (PowerNap, etc.), like you said, Jeremy.

  • DAVIDFALLING Calculating status...

    I am having the same problem on my new MacBook Pro Retina since upgrading to Mountain Lion.  When I first got the machine it would wake up from sleep instantly and allow me to type my password in.  Now, since the upgrade to Mountain Lion, it takes several seconds for me to be able to enter my password and move the mouse around.


    I'm very unhappy with this!  Why is it slower now that I did an upgrade to Mountain Lion?!  I love the new features, but it's quite annoying to be waiting several seconds to login, especially when it was just working a few days ago in Lion!

  • E-Dubb17 Level 1 Level 1 (0 points)

    UPDATE:  it now takes longer to wake from sleep than to simply start my macbook. This isn't a huge issue, but can be somewhat annoying

  • moparnut Calculating status...

    I'm noticing the same thing...


    Before ML, everything was lightning fast for both startup and returning from sleep.  I haven't tried adjusting any settings yet, but it's aggrevating that it's taking quite awhile to even show the cursor upon sleep mode.  Please let us know if anyone finds a fix for this.  I like having a fast machine...  not a somewhat fast machine!


    Here's hoping the first ML update will fix the issues that we (and others) seem to be having.



  • Goldfinch26 Calculating status...

    I also finding that my iMac is slow to awake from a sleep.Waiting a long time for the screen to apear and then even longer before the mouse will work.What with the seemingly overheating issue also I am regreting my decission to upgrade.Plus hardly any of the extra programmes are of any use to me.

    So waste of money all round.If I was more confident I would move back to Lion.


  • cbs20 Level 4 Level 4 (2,500 points)

    Check all of your applications for compatibility using If you have an incompatible app make sure you delete every trace of it including library files, but be very careful and cautious in the Library.

  • Xian Rinpoche Level 1 Level 1 (140 points)
    Currently Being Moderated
    Aug 2, 2012 7:19 AM (in response to cbs20)

    Yes. Just took 20s to fully wake up. This is compared to 2s with Lion. (iMac 27" i5)

  • roadkillrob Calculating status...

    I have a mid 2011 27" i7 imac and it has the same mountain lion wake up issue since upgrade, I could live with lion taking away the mouse causing it to wakeup, but now the USB keyboard hitting some keys won't wake it up for a full 20-30s and then once it gets around to waking up, the mouse won't work until you click it and then it gets around to waking up, Lion was instand with a keystroke.

    I have found that hitting the power button will wake it up instantly and everything will work within seconds including the mouse.


    Let's get this fixed apple, only have the world seems to have sleep issues with mountain lion and honestly I would give up any of the minor upgrades mountain lion has, get my 20 bucks back and just have a computer that actually wakes up and works!


    Next upgrade, Apple will be waiting a while for my money until they fix their issues.

  • DarwinF Level 1 Level 1 (0 points)

    This is very frustrating, I wish I had never upgraded my MacBook Pro.  In order to wake it up now I have to hold the power button until I hear the superdrive cycle, release the button, then press the button again and wait and wait and wait.  A progress bar comes up which I had never seen with lion, after another wait the bar disappears then the password screen pops up, but still I then have to wait longer until the mouse and keyboard works.


    Before the upgrade, with Lion the wake up was instantaneous.


    So frustrated with this I took my imac money and purchased a Dell 27 One instead and I don't regret it a bit. Apple you just lost my business.

  • Goldfinch26 Level 1 Level 1 (0 points)

    Some issues solved.


    I have closed down iCloud and all running a whole lot better.

    Also did another restart after unplugging the power lead etc.


    1) I don't need or use iCloud so on Lion it was logged out.But Mountain Lion seems to have decided I do need it and some parts turned back on.Only trouble was that not knowing iCloud was turned on some data in iCal was lost.Had to go back into iCloud bring iCal up to date,export and then reimport after iCloud logged out.


    2) Log on from turn off now much better and Safari so much quicker.


    3)I have no idea if iCloud was the problem and the SMC reset curred the issue and I am not worried it is working

    I can live without the bother of iCloud



  • moscov Calculating status...

    I applied the smc update for the retina mac book pro, I still had the problem, very slow wake from sleep or screen saver.


    I removed the Power Nap feature in system preferences:energy saver and haven't had the problem since, wake is instantenaous. So it seems the problem may be due to the Power Nap feature.

  • roadkillrob Level 1 Level 1 (0 points)
    Currently Being Moderated
    Aug 4, 2012 1:45 PM (in response to moscov)

    Good news, I have an imac, so no power nap settings, I gave up and just turned off sleep altogether and just have it sleep the monitor but not the rest of the computer.


    Works great - Apple's fault now that I am wasting large amounts of electricity!

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