CPU process killing battery life after putting laptop to sleep

Discussion in 'MacBook Pro' started by TS13, Nov 3, 2013.

  1. TS13, Nov 3, 2013
    Last edited: Nov 3, 2013

    TS13 macrumors member

    Joined:
    Oct 17, 2013
    #1

    EDIT: just uploaded a screenshot of the process in activity monitor... now going to reboot :(

    Every time after I put my laptop to sleep for more than about 5 minutes, then turn it back on, I notice my battery life "estimation" would drop dramatically (going from like 9 hours right before putting it to sleep, to like 3 when I open it)

    So I decided to check activity monitor and noticed in the CPU section there was a process labeled kernel_task that was using 100% of my CPU.. so I rebooted (with open current windows after reboot ticked off) and everything was back to normal

    anyone have any ideas?

    I forgot to take a screen shot, gonna try and take one in a few minutes

    13" rMBP late 2013 16GB/2,6/512SSD
     

    Attached Files:

  2. Starfyre macrumors 68030

    Starfyre

    Joined:
    Nov 7, 2010
    #2
    I wonder if it has something to do with push notifications and listening for them while its "sleeping".
     
  3. TS13 thread starter macrumors member

    Joined:
    Oct 17, 2013
    #3
    I'm not sure, but I have app nap off or whatever it's called, so it shouldn't be doing any of that :s

    I've also waited for it to go away after a few minutes.. nothing
     
  4. ROLLTIDE1 macrumors 68000

    Joined:
    Sep 12, 2012
    #4
    I have never used the sleep function on any laptop before
     
  5. Starfyre macrumors 68030

    Starfyre

    Joined:
    Nov 7, 2010
    #5
    Closing the lid counts, you close the lid at least once with any laptop you have while its still on right? :D
     
  6. ROLLTIDE1 macrumors 68000

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    Sep 12, 2012
    #6
    No I only close the lid after it's powered off
     
  7. TS13 thread starter macrumors member

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    Oct 17, 2013
  8. simon48 macrumors 65816

    simon48

    Joined:
    Sep 1, 2010
    #8
    I say wait it out, the kernel probably has some maintenance to do. Have you restarted your computer?
     
  9. TS13 thread starter macrumors member

    Joined:
    Oct 17, 2013
    #9
    like I said in my OP, I restart my laptop every time it happens as it's the only way I've been able to get it to stop.. quite annoying haha defeats the purpose of putting it to sleep
     
  10. simon48 macrumors 65816

    simon48

    Joined:
    Sep 1, 2010
    #10
    Oops, I missed that, sorry. I still say wait it out the kernel can do some weird things when it's doing maintenance.
     
  11. ohbrilliance macrumors 6502a

    ohbrilliance

    Joined:
    May 15, 2007
    Location:
    Melbourne, Australia
    #11
    Any particular reason for turning it off rather than sleeping it? There's little point in shutting down Apple laptops. I go weeks or even months between restarts.
     
  12. TS13 thread starter macrumors member

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    Oct 17, 2013
    #13
  13. T-Bob macrumors 6502

    T-Bob

    Joined:
    Oct 23, 2013
    #14
    Less wear on battery.
     

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