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  • DmitrySPB Level 1 (0 points)

    thanks for reply!


    without update 2.0 do you have multiple darkPME wakes in sytem log? I did this ( and the wakes were  every 1 hour.


    Could you tell the Apple support address to send my problem for statistic?

  • Christian Calderon Level 1 (0 points)

    Yes, before i did 2.0 firmware, I had approx 1 of those activities per hour. After the update every 3 to 5 minutes


    I actually called Apple Support and have been working with an analyst and Engineering.

  • DmitrySPB Level 1 (0 points)

    I unpacked update 2.0 with recipe ( and found 2 files with darkPME strings:


    MacBookAirandMacBookProUpd2.0.pkg\System\Library\CoreServices\powerd.bundle\powe rd

    MacBookAirandMacBookProUpd2.0.pkg\System\Library\Extensions\ xt\Contents\PlugIns\AppleACPIEC.kext\Contents\MacOS\AppleACPIEC

    Maybe they are responsible for wakes (maybe not )


    I have MBA 2011 which is not affected dark wakes and I will try to copy same files to my MBA 2012

  • DmitrySPB Level 1 (0 points)

    No effect


    I replaced powerd.bundle and AppleACPIEC from MBA 2011 10.8.2 to my MBA 2012 10.8.3 dev - my book still wakes every 5 min

  • Christian Calderon Level 1 (0 points)

    UPDATE: I received a call from Apple Support; Engineering confirms that there is a problem with Firmware Update 2.0 (they have heard from other users as well)

    So, I guess we will have the same issue until a new update is fixed.


    On a curious note: two nights ago after I had done all the updates, I put my computer to sleep, and next day there had been no drainage at all. I checked the console log and there was no "DarkPME (Maintenance)" activity. Very strange. It only happened once.

  • DmitrySPB Level 1 (0 points)

    Good news! Thanks!

  • mayokaze Level 1 (0 points)

    Same problem here with my MBA2012. I noticed when I connect it with an external monitor there is no "DarkPME" at all. Otherwise, It happens every 3-5 minutes. Really strange.

  • DmitrySPB Level 1 (0 points)

    Very strange. I've read that connection USB drive also prevent dark wakes but didn't test it. Sadly that Apple programmers released untested firmware

  • DmitrySPB Level 1 (0 points)

    New update of airport utility - 6.2 didn't solve the problem.

    Last night I closed lid of MBA 2012 when it was 35% charge. This morning battery was compleatly discharged.

  • jcazn42 Level 1 (0 points)

    As an FYI -- I'm having the same issue with my MID MBA 2012. I went to the genius bar 5 times, and tried he following:


    Visit 1 - Resetting the SMC (Result: No Success)

    Visit 2 - Resetting SMC, DNS Cache, and Sleep Image (This had success for a week, not sure if it was coincidence)

    Visit 3 - Reformatted With New Updates Install (Result: No Success)

    Visit 4 - Apparently the genius thought the reformat was done wrong at the store (the first time). But i allowed him to do the same thing, so reformatted with new updates (Result: No Success)

    Visit 5: No Action, genius representative tried to tell me this was normal activity. I did not agree and requested to raise with an engineer. I'm like there is no way my relatively new computer should be draining 25% + overnight.


    Genius Follow Up: Sent me a capture data program. I ran the program and sent the engineer the result. We will see.


    Did you guys notice the sudden drain due to any specific reason? Firmware Update, Exposure to Heat, D/L a program etc.? For me, it was really just sitting in my apartment, so i don't see anything physically that changed.


    Will keep you posted once the engineer comes back.

  • DmitrySPB Level 1 (0 points)

    Summarizing all post I may notice that sudden battery drain is due dark wakes of macbook - for short period mac wakes to connect WiFi or Lan. If it will happens one time in hour it will be ok, but it repeats every 5 minutes, so battery drains faster. This behavior starts after firmware update 2.0 and Apple engineers know about this problem.


    It will be interesting to read engineer's feedback

  • DmitrySPB Level 1 (0 points)

    I found temporary solution of our problem: in terminal I write (no AC connected)


    sudo pmset -a standbydelay 86400


    Now after 14 hours with closed lid battery of my MBA decreased from 86 to 80%. Before this changes my mac usually lost about 25-30% of charge. In console there was no strings in system.log from 7 am to 8 pm

  • sorenfriis Level 1 (0 points)

    Same problem here on my MBA 2012.

    Waking from hibernate every 5-7 minutes which depletes the battery.

    I have fiddled with various pmset adjustments, including only using hibernatemode=25 (i.e. forced hibernation when going to sleep), but the machine still wakes up every 5 minute to do whatever it is doing.


    I would really like to have the confidence of hibernate back, so I know for sure that there is just as much juice on the machine as when I left it. Of course we could just shut down, but I really like (the idea of) the auto standby->hibernate feature :-)


    I really hope Apple is listening and will issue an update soon.


    Christian Calderon, did you get any detail from the Apple engineer on when to expect an update?

  • mayokaze Level 1 (0 points)

    Hi, guys. I found the problem is due to our MacBook can not hibernate properly. Simply disable auto standby->hibernate feature(or set a big value on standbydelay -on battery and autopoweroffdelay - AC connected ) will solve this problem.

    Hope this help.

  • Christian Calderon Level 1 (0 points)

    @sorenfriis - No, I didn't get a specific timeline.


    @mayokaze - how do you exactly do that?