"Power Nap"?

Discussion in 'OS X Mountain Lion (10.8)' started by glitch44, Jun 11, 2012.

  1. glitch44 macrumors 65816

    Joined:
    Feb 28, 2006
    #1
    [​IMG]

    So Power Nap is only for new laptops? The "2nd gen" Macbook Air doesn't really clarify things, since technically they're on the fourth or fifth generation.
     
  2. CodeBreaker macrumors 6502

    Joined:
    Nov 5, 2010
    Location:
    Sea of Tranquility
    #2
    Ya. I actually thought that was a typo/mistake. But maybe it is for the 11 inch Air. I mean, the generation that got the instant on, one month sleep, etc.
     
  3. vmachiel macrumors 68000

    Joined:
    Feb 15, 2011
    Location:
    Holland
    #3
    I think it means the 2010 revision; basically all macbooks that have ssd standard
     
  4. dukebound85 macrumors P6

    dukebound85

    Joined:
    Jul 17, 2005
    Location:
    5045 feet above sea level
    #4
    Not even for new laptops as the new pros seem to not support it???
     
  5. GoCubsGo macrumors Nehalem

    GoCubsGo

    Joined:
    Feb 19, 2005
    #5
    I don't get why this is a feature that isn't supported on older (2-3 years old) machines. It seems odd. My MacPro wakes by itself all of the time, it may as well do something productive!
     
  6. Tom8 macrumors 6502a

    Joined:
    Oct 28, 2010
    #6
    On the Apple site for Mountain Lion it says

    "Power Nap requires a Mac notebook with built-in flash storage. May require a firmware update."

    So it'll probably come in a firmware update, like the Lion internet recovery partition thing
     
  7. kristoffer4 macrumors 6502a

    kristoffer4

    Joined:
    Jan 17, 2006
    Location:
    Denmark
    #7
    I wonder if this will eat the battery when my mac is asleep? :confused:
     
  8. Jamie0003 macrumors 6502a

    Joined:
    Apr 17, 2009
    Location:
    Norfolk, UK
    #8
    I'm assuming that means macs WITH flash storage will need updating. I think the reason for this is because when a HDD has to start up, it needs to start spinning which would make noise; with SSD it doesn't.
     
  9. Cougarcat macrumors 604

    Joined:
    Sep 19, 2003
    #9
    It means it is limited to flash only, but some of those flash macs will require an update. Hard drive based macs are NOT supported.

    If you think about it, this makes sense. You do not want a hard drive constantly turning, it will kill it and zap your battery.

    (That might be what you were trying to say.)
     
  10. pdjudd macrumors 601

    Joined:
    Jun 19, 2007
    Location:
    Plymouth, MN
    #10
    That I think is the point of the feature - it’s exploiting the power advantages and non-moving part nature of SSD’s. It’s not efficient nor desirable to have a process that runs the hard drive during sleep - it wastes lots of power and it wears down the drive.
     
  11. jharvey71884 macrumors 6502

    Joined:
    May 3, 2011
    #11

    So if you have an older Macbook Pro, this feature will just not work, or you won't be able to update the release at all? Little confused.
     
  12. pdjudd macrumors 601

    Joined:
    Jun 19, 2007
    Location:
    Plymouth, MN
    #12
    The way I understand it (I may be wrong), unless your laptop (this is only for laptops) came standard with a SSD (and nothing else), you cannot use this feature period. Even in some cases, a firmware update may be needed.

    Apple doesn’t want this on any computer that has a stock spinning disk drive - they don’t want to risk damaging user’s disks with unnecessary activity. Maybe they will expand it to other laptops that have a SSD, but I wouldn’t count on it.
     
  13. jharvey71884 macrumors 6502

    Joined:
    May 3, 2011
    #13
    So do they not wanting you downloading Mountain Lion in general then, or will they let you download it, but the feature won't work.
     
  14. pdjudd macrumors 601

    Joined:
    Jun 19, 2007
    Location:
    Plymouth, MN
    #14
    Powernap is just one feature of ML - it’s just one that only works on certain limited macs just like Air Drop. That doesn’t mean at all that Apple doesn’t want you to download and install ML for the rest of the 200+ features.

    ML works on all full 64 bit macs.

    ETA: Here are the requirements for Mountain Lion - it supports a wide selection of Macs
     
  15. Jamie0003 macrumors 6502a

    Joined:
    Apr 17, 2009
    Location:
    Norfolk, UK
    #15
    Yes exactly, lol what he said
     
  16. nec207 macrumors 6502

    Joined:
    Mar 21, 2011
    #16
    Would this Power Nap thing not eat up more battery when turn on?
     
  17. bushido Suspended

    bushido

    Joined:
    Mar 26, 2008
    Location:
    Germany
    #17
    i have an old mid 2009 mbp which i upgraded with an SSD a while ago and i think i have the "Power Nap" option ...

    when i go to the "save energy" settings there's a new button to enable. it says "check for e-mails and notifications during sleep mode every once in a while" (roughly translated from german) and i can enable it
     
  18. treichert macrumors 6502

    Joined:
    Nov 7, 2007
    Location:
    Aachen, Germany
    #18
    Me too on a 2010 13" MBP with an SSD.
     
  19. kristoffer4 macrumors 6502a

    kristoffer4

    Joined:
    Jan 17, 2006
    Location:
    Denmark
    #19
    I would expect so although it might be a smart feature if you could set it to only function when plugged in. Can you do that?
     
  20. FoundAHalo, Jun 12, 2012
    Last edited: Jun 12, 2012

    FoundAHalo macrumors member

    FoundAHalo

    Joined:
    Jul 3, 2009
    Location:
    Raleigh, NC
    #20
    My MBA 11" with 10.8 DP4 is just prompted with EFI 1.4 update for "Macs running 10.8). Presumably to bring Power Nap?

    UPDATE: Confirmed – EFI update brings Power Nap support
     
  21. haravikk macrumors 65816

    Joined:
    May 1, 2005
    #21
    I think the point is that it should only use a tiny bit of power as it presumably keeps the processor at the lowest clock-speed, maybe forces the use of only one core, and since it requires an SSD there should be no significant heat, no need for fans etc., so power draw should be tiny.

    The decision is whether you want to trade off a small amount of power drain for ensuring that syncing features continue. That said though I really don't see the usefulness if you're on the go, as you're unlikely to have access to Time Machine, and the last thing you want is your machine to be trying every nearby WiFi hotspot in an attempt to get online for e-mail etc.

    Result is that this is most useful for a machine that's plugged in to charge at home, as you can save power without interrupting Time Machine backups, and when you re-open the machine it'll be up to date on e-mails etc.
     
  22. darkslide29 macrumors 65816

    Joined:
    Oct 5, 2011
    Location:
    San Francisco, California
    #22
    Have you been able to test this out and confirm that it works on your MBP with an SSD?

    My girlfriend has a 2011 MBP and her biggest annoyance is waking up her MBP and having to wait for iMessages and emails to catch up. She is considering selling her MBP for a MBA just for this feature. I hate selling something of so much value on eBay or Craigslist, so I am trying to avoid it.

    I am hoping we can just replace the stock hard drive on the MBP with a 128 or 256mb SSD and simply enable this feature. However, if it requires it to be an original SSD from Apple, then she will probably make the switch.
     
  23. treichert macrumors 6502

    Joined:
    Nov 7, 2007
    Location:
    Aachen, Germany
    #23
    As far as I can tell, it does not really do anything although I can activate it.

    EDIT: Just went into Preferences and the box now gets unchecked after leaving System Preferences by itself - so possibly its appearance is just a bug.
     
  24. darkslide29 macrumors 65816

    Joined:
    Oct 5, 2011
    Location:
    San Francisco, California
    #24
    That's too bad. Thanks for trying though!

     
  25. Cougarcat macrumors 604

    Joined:
    Sep 19, 2003
    #25
    It'll only do certain tasks when plugged in, I think (Like download updates.)
     

Share This Page