s_haggerty
Level 1 (4 points)
Mac OS X

Q: Waking from Hibernation issue

I am experiencing a problem with my late 2011 macbook pro (a1278). The computer enters and wakes from hibernation as it should except in the case that I plug it in before waking it from hibernation. If the computer is hibernated with the lid shut, and I connect the charger, I can hear the optical drive make a sound like it normally does when waking from hibernation or booting, but when I open the lid the screen is black (no backlight). Pressing the power button, waiting, and closing and opening the lid do nothing once this happens, to resolve the issue I have to hold down the power button to reset the SMC and then press the power button to reboot the computer. I am guessing it is related to the hibernation configurations for battery vs ac power; I have messed with the pmset settings with Terminal before so I'm guessing the issue lies there.

MacBook Pro, OS X El Capitan (10.11.5)

Posted on Jun 26, 2016 8:18 PM

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s_haggerty

Q: Waking from Hibernation issue

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  • by chris_g1,

    chris_g1 chris_g1 Jun 27, 2016 9:25 AM in response to s_haggerty
    Community Specialists
    Jun 27, 2016 9:25 AM in response to s_haggerty

    Hi, s_haggerty!

     

    Thanks for using the Apple Support Communities. From your post I am understanding that your MacBook Pro doesn't wake from sleep as expected after you connect it to the MagSafe power adapter. I rely on my Mac every day, so I know it's important for it to wake when you need it to, and am happy to provide some information that should help.

     

    I'd recommend going through the following article to get started.

     

    If your Mac doesn‘t sleep or wake when expected

     

    Specifically, I suggest focusing on the "If your Mac doesn't wake when you expect", and then the "If the previous steps don't work" which gives the following additional troubleshooting:

     

    These additional steps may help identify or resolve the issue: 

    • Reset the SMC.
    • Reset NVRAM.
    • Disconnect external devices other than your Apple keyboard, mouse, and display. If that resolves the issue, gradually reconnect your devices, testing each time, until you find the device that is interfering with sleep. Then check the documentation that came with the device, or contact the device manufacturer.
    • Start up in Safe Mode to see if the issue is related to non-Apple startup items, login items, or kernel extensions. 
    • Try to isolate the issue by using another user account. 

     

    Have a lovely day!