Retina MacBook Pro Firmware Power Nap

Discussion in 'MacBook Pro' started by harrisonw1998, Jul 27, 2012.

  1. harrisonw1998 macrumors regular

    Jul 18, 2011
    I have a rMBP and don't have the firmware update for Power Nap. Have you guys gotten it yet or has it yet to be released?
  2. heyimandy macrumors member

    Jun 12, 2012
    Toronto, ON
  3. br3nt macrumors member

    Jul 1, 2012
  4. rdowty macrumors 6502a


    Oct 5, 2008
    It just showed up in software update for me (rMBP).
  5. Beherit7 macrumors newbie

    Jun 26, 2012
    The fan turning on at full speed during this update scared me haha
  6. Dunlop122 macrumors newbie

    Jul 27, 2012
    Same here. Certainly got my attention!
  7. harrisonw1998 thread starter macrumors regular

    Jul 18, 2011
    I know! I remember other firmware upgrades that did the same thing. I wonder
  8. fizzwinkus macrumors 6502a

    Jan 27, 2008
    There's probably no software to tell the fan system how fast to run (based on CPU/gpu/ram temps) while firmware is updating so the fan system ramps to max just to be safe.

    Once the smc or system is rebooted, the software is active and can tell the fan system what to do.
  9. fkhan3 macrumors 6502

    Apr 28, 2010
    For a second I thought my MBP will start hovering over my desk :D
  10. a3vr macrumors member

    Jun 28, 2012
    No joke! Before the update I thought I'd heard the fans at 100%. I was definitely wrong.
  11. terraphantm macrumors 68040

    Jun 27, 2009
    Hmm, I don't remember my fans going to 100% while I was updating... maybe I was watching TV or something at the time.
  12. br3nt macrumors member

    Jul 1, 2012
    if im not mistaken and this is just my guess, haven't read up so much:

    the SMC controls the fan... but the SMC needs firmware to be able to operate, hence when you update firmware you shut off the controlling part, thus making the fans go with "better safe than sorry" and ramping up to cool down the computer until the update is done.

    and on another note: had my TB -> Ethernet adapter plugged in
    (with the ethernet cat5e cable) during powernap, within 12h it had consumed 17% battery) ... so theres a reason apple said to unplug things when on battery and powernap is on :rolleyes:

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