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DmitrySPB Author

Level 1

4 points

Wake reason: EC.DarkPME (Maintenance)

My macbook air 2012 wakes up when lid closed. Power Nap switched off, wake on lan and bluetooth disabled. SMC alreedy reseted. Power config files were deleted and rebooted. In console i found this:

27.12.12 6:58:58,000 kernel[0]: AirPort_Brcm43xx::powerChange: System Wake - Full Wake/ Dark Wake / Maintenance wake

27.12.12 7:02:56,000 kernel[0]: Wake reason: EC.DarkPME (Maintenance)

27.12.12 7:02:56,000 kernel[0]: AirPort_Brcm43xx::powerChange: System Wake - Full Wake/ Dark Wake / Maintenance wake

27.12.12 7:07:54,000 kernel[0]: Wake reason: EC.DarkPME (Maintenance)

27.12.12 7:07:54,000 kernel[0]: AirPort_Brcm43xx::powerChange: System Wake - Full Wake/ Dark Wake / Maintenance wake

27.12.12 7:11:41,000 kernel[0]: Wake reason: EC.DarkPME (Maintenance)

27.12.12 7:11:41,000 kernel[0]: AirPort_Brcm43xx::powerChange: System Wake - Full Wake/ Dark Wake / Maintenance wake

27.12.12 7:15:44,000 kernel[0]: Wake reason: EC.DarkPME (Maintenance)

27.12.12 7:15:44,000 kernel[0]: AirPort_Brcm43xx::powerChange: System Wake - Full Wake/ Dark Wake / Maintenance wake

27.12.12 7:20:29,000 kernel[0]: Wake reason: EC.DarkPME (Maintenance)

27.12.12 7:20:29,000 kernel[0]: AirPort_Brcm43xx::powerChange: System Wake - Full Wake/ Dark Wake / Maintenance wake

27.12.12 7:25:19,000 kernel[0]: Wake reason: EC.DarkPME (Maintenance)

27.12.12 7:25:19,000 kernel[0]: AirPort_Brcm43xx::powerChange: System Wake - Full Wake/ Dark Wake / Maintenance wake

27.12.12 7:30:09,000 kernel[0]: Wake reason: EC.DarkPME (Maintenance)

27.12.12 7:30:09,000 kernel[0]: AirPort_Brcm43xx::powerChange: System Wake - Full Wake/ Dark Wake / Maintenance wake

27.12.12 7:35:15,000 kernel[0]: Wake reason: EC.DarkPME (Maintenance)

27.12.12 7:35:15,000 kernel[0]: AirPort_Brcm43xx::powerChange: System Wake - Full Wake/ Dark Wake / Maintenance wake

27.12.12 7:39:28,000 kernel[0]: Wake reason: EC.LidOpen (User)

27.12.12 7:39:28,000 kernel[0]: AirPort_Brcm43xx::powerChange: System Wake - Full Wake/ Dark Wake / Maintenance wake

What is the EC.DarkPME?

MacBook Air, OS X Mountain Lion (10.8.2)

Posted on Dec 29, 2012 7:24 AM

Top-ranking reply

DmitrySPB Author

Level 1

4 points

Posted on Aug 11, 2014 12:15 PM

Dear friends!

Finally I found a solution to my question!!!

After some firmware modification Apple realized two ways of MB sleep: 1) standby, 2) autopoweroff. I have old MB air where command pmset -g prints only parameters related to standby regime and that MB sleeps very well. In my MB Air mid 2012 pmset - g prints both - standby and autopoweroff - and they all were enabled. Now I set autopoweroff to 0 and my MB goes to hibernate with pleasure and sleeps all days and nights 🙂 No battery discharge at all !!! Now when I opening lid - MB thinks during 1-2 sec and then I see my Desktop.

Here cutted power log:

Aug 11 10:59:48 MBA.local powerd[16] <Notice>: Clamshell Sleep: Using BATT (Charge:76%)

Aug 11 10:59:48 MBA.local powerd[16] <Notice>: Clients requested wake events: None

Aug 11 11:09:52 MBA.local powerd[16] <Notice>: DarkWake [CDN] due to EC.SleepTimer/SleepTimer: Using BATT (Charge:76%)

Aug 11 11:09:52 MBA.local powerd[16] <Notice>: hibmode=0 standbydelay=600

Aug 11 11:09:52 MBA.local powerd[16] <Notice>: Maintenance Sleep: Using BATT (Charge:76%)

Aug 11 11:09:52 MBA.local powerd[16] <Notice>: Clients requested wake events: None

Aug 11 21:40:28 MBA.local powerd[16] <Notice>: Wake from Standby [CDNVA] due to EC.LidOpen/Lid Open: Using BATT (Charge:78%)

Aug 11 21:40:28 MBA.local powerd[16] <Notice>: hibmode=0 standbydelay=600

Here is my pmset settings (on battery power):

pmset -g

Active Profiles:

Battery Power -1*

AC Power -1

Currently in use:

standbydelay 600

standby 1

halfdim 1

hibernatefile /var/vm/sleepimage

darkwakes 0

disksleep 10

sleep 10

autopoweroffdelay 14400

hibernatemode 0

autopoweroff 0

ttyskeepawake 1

displaysleep 2

acwake 0

lidwake 1

I tested with hibernatemode 0 - it means keep image in memory. MB also sleeps well with mode 3 - combined regime.

Good luck with yours!!!

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70 replies

DmitrySPB Author

Level 1

4 points

Feb 3, 2013 9:36 PM in response to Christian Calderon

thanks for reply!

without update 2.0 do you have multiple darkPME wakes in sytem log? I did this (https://discussions.apple.com/thread/4645214?answerId=20755598022#20755598022) and the wakes were every 1 hour.

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

Feb 3, 2013 9:40 PM in response to DmitrySPB

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 Author

Level 1

4 points

Feb 3, 2013 11:06 PM in response to Christian Calderon

I unpacked update 2.0 with recipe (http://tdev.me/2010/11/extract-acpi-tables-from-firmware-update-file/) and found 2 files with darkPME strings:

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

MacBookAirandMacBookProUpd2.0.pkg\System\Library\Extensions\AppleACPIPlatform.ke 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 Author

Level 1

4 points

Feb 4, 2013 7:43 PM in response to DmitrySPB

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

Feb 6, 2013 7:13 AM in response to DmitrySPB

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 Author

Level 1

4 points

Feb 6, 2013 9:24 AM in response to Christian Calderon

Good news! Thanks!

mayokaze

Level 1

0 points

Feb 7, 2013 4:56 PM in response to DmitrySPB

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 Author

Level 1

4 points

Feb 7, 2013 9:43 PM in response to mayokaze

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 Author

Level 1

4 points

Feb 8, 2013 11:21 PM in response to DmitrySPB

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

Feb 9, 2013 10:08 AM in response to DmitrySPB

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 Author

Level 1

4 points

Feb 10, 2013 12:23 AM in response to jcazn42

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 Author

Level 1

4 points

Feb 11, 2013 8:41 AM in response to DmitrySPB

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

Feb 19, 2013 1:07 AM in response to DmitrySPB

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

Feb 19, 2013 3:57 AM in response to DmitrySPB

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.

Feb 20, 2013 10:13 AM in response to sorenfriis

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

@mayokaze - how do you exactly do that?

Wake reason: EC.DarkPME (Maintenance)