MacBook Air Energy Saver Settings

Discussion in 'MacBook Air' started by bingefeller, Jan 9, 2017.

  1. bingefeller macrumors 6502

    Joined:
    Jun 25, 2007
    Location:
    Northern Ireland
    #1
    I have some questions about the Energy Saver settings that I can hopefully get some help with.

    When on battery power how can I stop my MBA from going to sleep? I was on battery power and put my computer down while I went out of the room for 10 minutes or so, when I came back the screen was black and I assumed it had just turned itself off. When I hit a key to turn the screen back on I noticed my IRC session had disconnected. Is there anyway I can extend this time limit on battery power?

    Should I choose the option "Put hard disks to sleep when possible"? I have a 512GB PCIe-based flash storage and would like the hard drive to last as long as possible.
     
  2. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #2
    Just run this slider all the way to the right to never and it will always stay awake until the battery dies. Or set to an hour or whatever you like.

    Screen Shot 2017-01-09 at 12.49.57 PM.png

    It does not really matter for your internal flash storage. This is really more for external hard drives you might have attached.
     
  3. bingefeller thread starter macrumors 6502

    Joined:
    Jun 25, 2007
    Location:
    Northern Ireland
    #3
    Thanks :)
     
  4. Boyd01 macrumors 68040

    Boyd01

    Joined:
    Feb 21, 2012
    Location:
    New Jersey Pine Barrens
    #4
    They changed this control panel awhile ago, it now only allows you to choose the timeout for the display and I think there used to be separate settings for display and computer sleep. This has always confused me… on mine I think only the display sleeps when I choose a lower value. I suppose if the battery gets low, then the whole computer sleeps?

    The OP said his computer went to sleep and disconnected him from the internet after 10 minutes. Doesn't seem like that should have happened.
     
  5. bingefeller thread starter macrumors 6502

    Joined:
    Jun 25, 2007
    Location:
    Northern Ireland
    #5

    yeah it's still sleeping after a while on power supply.

    here are my terminal settings for my energy settings:

    Code:
    Battery Power:
     lidwake              1
     autopoweroff         1
     autopoweroffdelay    28800
     standbydelay         10800
     standby              1
     ttyskeepawake        1
     hibernatemode        3
     powernap             0
     gpuswitch            2
     hibernatefile        /var/vm/sleepimage
     displaysleep         60
     sleep                60
     acwake               0
     halfdim              1
     lessbright           0
     disksleep            0
    AC Power:
     lidwake              1
     autopoweroff         1
     autopoweroffdelay    28800
     standbydelay         10800
     standby              1
     ttyskeepawake        1
     hibernatemode        3
     powernap             1
     gpuswitch            2
     hibernatefile        /var/vm/sleepimage
     displaysleep         30
     womp                 0
     networkoversleep     0
     sleep                30
     acwake               0
     halfdim              1
     disksleep            0



    Can anyone help me fix the sleep time on power supply?
     
  6. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #6
    What happened was in 2013 Macs switched to the new Intel Haswell chipset, and those have a new low power state that is used instead of sleeping. So the Mac really never sleeps... rather the screen is shut off and the CPU goes into that low power state. So the separate sleep setting is gone on Macs that came out since this new chipset.

    If the battery gets low enough it actually shuts down.
    --- Post Merged, Jan 10, 2017 ---
    What do you have the Power Adaptor sleep settings set to in that System pref panel from my screenshot?
     
  7. bingefeller thread starter macrumors 6502

    Joined:
    Jun 25, 2007
    Location:
    Northern Ireland
    #7
    Here they are:

    [​IMG]
     
  8. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
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    California
    #8
    So does it not sleep after 30 minutes on AC power?

    Earlier you were talking about sleep on battery.
     
  9. bingefeller thread starter macrumors 6502

    Joined:
    Jun 25, 2007
    Location:
    Northern Ireland
    #9

    Sorry I meant to update - it's now sleeping after 30 minutes on AC power, which I don't really want it to do. I would prefer the system didn't sleep on AC power, but I want do want the display to sleep on AC power, if that makes sense.
     
  10. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #10
    Okay... gotcha. So check that Prevent computer from sleeping... box then set the top slider to whatever time you want. So in say 30 minutes the screen will blank but the computer will not go to sleep.
     
  11. bingefeller thread starter macrumors 6502

    Joined:
    Jun 25, 2007
    Location:
    Northern Ireland
    #11
    Ahh I'm stupid!! The answer was there in front of me all along!!! Thank you!
     

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