Skip navigation

What is this white bar that shows up when I wake up my MacBook?

227 Views 5 Replies Latest reply: Feb 8, 2013 7:56 PM by SwankPeRFection RSS
houseofjanzen Level 1 Level 1 (0 points)
Currently Being Moderated
Feb 7, 2013 7:31 PM

I have a MacBook Pro that's less than 1 year old. It's the 3rd MacBook I've owned. When I open it up sometimes instead of it simply going back to normal the screen looks slightly whited out (like the image I've attached) with a white bar made up of dots kind of that fills up before it goes back to normal. Anybody know what the white bar type thing is? The other two MacBooks I've owned have never shown that and I'm wondering why this one doesn't immediately wake up like the other ones have/do. It's kind of irritating me.


Thanks. IMG_0534.jpg

OS X Mountain Lion (10.8.2)
  • leroydouglas Level 6 Level 6 (13,320 points)

    If this is repeatable, I would take it in for assessment.


    Genius reservation



    You can Try resetting the SMC   for Incorrect response to portable's lid open/close.

    MacBook Pro (15-inch Mid 2010), OS X Mountain Lion (10.8.2), 2.4GHz IntelCorei5 320GB HD 8GB RAM
  • Linc Davis Level 10 Level 10 (107,725 points)

    With the "Power Nap" feature enabled, the computer enters a so-called standby mode after it has been in sleep on batery power for more than a certain time (one hour, by default.) In that mode, the contents of memory are saved to a file, and then the power is turned off. When the computer wakes up, the contents of memory are restored from the file. As a result, waking from sleep takes longer than it otherwise would. The benefit is that sleep can be prolonged indefinitely without draining the battery or having to reboot.

  • SwankPeRFection Level 4 Level 4 (1,435 points)

    This is a new Power Management change introduced with update DL1609.  You'll also notice now another quirky issue that if you close your lid and put your MacBook to sleep, when you plug/unplug your power adapter the MacBook wakes up for a few seconds.  Yep, it's annoying.  Blame Apple.


    Also, the deep hibernate, even though is set to engage after 4 hours of sleep on both AC and Battery, ONLY works when the laptop is on AC power.  So, you will see it hibernate like this only when it's plugged in to charge and has been sleeping for a minimum of 4 hours.  Once it reaches that time, it hibernates and the next time you wake it, it'll look like what you see on your screen for a few seconds (like 20-30 or so).

  • Linc Davis Level 10 Level 10 (107,725 points)

    What is your source for that information?

  • SwankPeRFection Level 4 Level 4 (1,435 points)

    Umm, ME.  That's the source.  That and Apple because they're the ones that indicated that the PM changes implemented were part of that update.  It was pushed out back in November and just recently, more and more people are noticing this new behavior.  I noticed it 2 days after I first installed this update back in November and I've been working with them since then to try and get an explanation on why it's more efficient to "wake" the system out of sleep when you plug/unplug the AC adapter from it.  In addition to that, I'm also waiting to hear from them why when both AC and Battery settings in PM are "by default" set to hibernate after 14400 seconds (4 hours), why it only happens when it's on AC and not on battery.  They currently have no answer to this.  I don't think they "get it".


More Like This

  • Retrieving data ...

Bookmarked By (0)


  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.