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Moshe1010

macrumors 6502a
Original poster
Jun 27, 2010
874
99
When I disconnect the charger from my rMBP 15", the apple logo on the back top cover lights up and than after few seconds it turns off by itself (without getting the laptop out of sleep mode). Is this normal?
 

kissmygrass

macrumors newbie
Nov 19, 2012
23
0
Log will show if rMBP woke up and what was the reason.
One of the November updates for MBP messed up some things in power management, it's possible this rMBP started waking up on AC connect/disconnect.

----------

That isn't normal, unless it has something do do with PowerNap.

It is normal for acwake 1.
 

Interstella5555

macrumors 603
Jun 30, 2008
5,219
13
Let me get this straight: So when you unplug the charger the screen turns on, then a few seconds later shuts off?

Could you share results of
syslog | grep -i "wake reason"
from Terminal?

I dont understand what you are saying...
Do you mean the display goes to sleep?

That isn't normal, unless it has something do do with PowerNap.

Log will show if rMBP woke up and what was the reason.
One of the November updates for MBP messed up some things in power management, it's possible this rMBP started waking up on AC connect/disconnect.

----------



It is normal for acwake 1.

I'[m fairly certain the OP is talking about the Apple logo on the back of the display, not the display itself.

OP - This is normal, AFAIK the logo only lights up when you're plugged in, but I don't spend a lot of time looking at the back of the screen while I'm using my MBP, so I could be incorrect there. Either way I probably wouldn't worry about it.
 

dragon2611

macrumors regular
Sep 19, 2004
156
4
I'[m fairly certain the OP is talking about the Apple logo on the back of the display, not the display itself.

OP - This is normal, AFAIK the logo only lights up when you're plugged in, but I don't spend a lot of time looking at the back of the screen while I'm using my MBP, so I could be incorrect there. Either way I probably wouldn't worry about it.

The logo is just translucent plastic the reason it lights up is because the display backlight is on ;)

Also on the air at least if there's a strong light source behind the mac and screen is off you can see the logo from the front of the screen, freaked me out a bit the first time it happened. (I'd perched my air on a window sill for a moment)
 

justperry

macrumors G5
Aug 10, 2007
12,553
9,745
I'm a rolling stone.
If the lid is closed and the mac is asleep and then unplug whatever plug the Apple will always lit up, the display will get active but since the lid is closed will go into sleep again.
The Apple Logo is lit by the display!!!
This has always been the case AFAIK.
 

kissmygrass

macrumors newbie
Nov 19, 2012
23
0
If the lid is closed and the mac is asleep and then unplug whatever plug the Apple will always lit up, the display will get active but since the lid is closed will go into sleep again.

If acwake is 1, then connecting/disconnecting Magsafe will result in waking Mac. It is supposed to stay asleep if acwake is 0.
 

Moshe1010

macrumors 6502a
Original poster
Jun 27, 2010
874
99
Ok, so I will restate what I mean:

My rMBP is connected to its charger and the lid is closed, which means the display is off. After few hours, when it's still charging (and again, the entire process the lid is closed), I disconnect the charger from the rMBP and suddenly the Apple logo on the back lid (the physical Apple logo, on the back of the laptop) lights up for 5-10 sec and then goes off (again, without opening the lid/display).
So, is this normal?

FYI: I don't have any bluetooth/USB devices connected to my rMBP. In addition, Power Nap is off.

Could you share results of
syslog | grep -i "wake reason"
from Terminal?
Mikes-MacBook-Pro:~ Mike$ syslog |grep -i "Wake reason"
Dec 5 02:49:11 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 5 02:52:17 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.SleepTimer (SleepTimer)
Dec 5 10:34:06 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec 5 10:34:15 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 5 13:03:11 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 5 14:12:12 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 5 14:16:22 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 5 15:26:49 mikes-macbook-pro kernel[0] <Debug>: Wake reason: EC.LidOpen EHC1 (User)
Dec 5 15:41:42 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.SleepTimer (SleepTimer)
Dec 6 00:13:38 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach (Maintenance)
Dec 6 00:13:47 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.SleepTimer (SleepTimer)
Dec 7 00:11:56 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec 7 00:12:05 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 7 03:39:21 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LowBattery (LowBattery)
Dec 7 07:46:43 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: ?
Dec 7 07:46:52 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.SleepTimer (SleepTimer)
Dec 10 10:09:27 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec 10 10:09:36 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 10 12:53:58 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen EHC1 (User)
Dec 10 14:06:07 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.SleepTimer (SleepTimer)
Dec 10 16:00:38 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach (Maintenance)
Dec 10 16:00:47 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.SleepTimer (SleepTimer)
Dec 10 22:08:14 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec 10 22:08:23 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 11 00:09:59 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.SleepTimer (SleepTimer)
Dec 11 10:50:26 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach (Maintenance)
Dec 11 10:50:35 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec 11 11:34:26 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
 
Last edited:

DollaTwentyFive

macrumors 6502a
Nov 11, 2010
747
4
Parts Unknown
I have seen this happen on my MBA. In my case, I think it has something to do with clamshell mode. I typically have the MBA plugged into an apple ATD and as such, it is plugged into power and the thunderbolt connector most of the time.

When I pull it out of its stand to take it with me, I unplug the magsafe cable and the thunderbolt cable. I do notice that for a few seconds the logo lights up and then goes dark. I had always assumed this was related to the display and me essentially taking it out of clamshell mode.

Not sure, OP, why this would happen for you. As someone mentioned, could be related to power-nap somehow.
 

Moshe1010

macrumors 6502a
Original poster
Jun 27, 2010
874
99
I have seen this happen on my MBA. In my case, I think it has something to do with clamshell mode. I typically have the MBA plugged into an apple ATD and as such, it is plugged into power and the thunderbolt connector most of the time.

When I pull it out of its stand to take it with me, I unplug the magsafe cable and the thunderbolt cable. I do notice that for a few seconds the logo lights up and then goes dark. I had always assumed this was related to the display and me essentially taking it out of clamshell mode.

Not sure, OP, why this would happen for you. As someone mentioned, could be related to power-nap somehow.

Power Nap is off since day one.
 

nitromac

macrumors 6502
Jul 29, 2012
282
13
US
Sometimes my MBP turns on when I take out the power plug, other times it stays asleep.

Been having a few more issues with these new updates lately, too...
 

Moshe1010

macrumors 6502a
Original poster
Jun 27, 2010
874
99
Sometimes my MBP turns on when I take out the power plug, other times it stays asleep.

Been having a few more issues with these new updates lately, too...
Yes that's exactly what I have. Sometimes it lights up but other times it doesn't. I've noticed that it lights up only when the rMBP gets into deep sleep or something like that (20-24 hours of charging).
 

kissmygrass

macrumors newbie
Nov 19, 2012
23
0
Dec 11 10:50:26 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach (Maintenance)
Dec 11 10:50:35 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)

OK, your Mac thinks it's supposed to wake on AC attach/detach. Check acwake (pmset -g). If it's 0 and you have installed MacBook Pro/Air update (2.0, it was released at the beginning of November and it resurfaced recently), you may have similar problem as other users. No 100% working solution at the moment.
 

JoeG4

macrumors 68030
Jan 11, 2002
2,828
493
My MBA usually does that when I plug it in, not when I unplug it
 

tharitm

macrumors 6502a
Nov 9, 2009
637
620
I am also having this issue. Using a 13 inch non retina model though. The logo doesn't light up but when the machine is asleep and lid closed, if I unplug or plugin in the charger or the lan cable it wakes from sleep and goes to sleep again. I can hear the fans running.

And the result from terminal
Code:
Dec  6 04:08:57 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: RTC (Alarm)
Dec  6 06:09:15 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: RTC (Alarm)
Dec  6 06:18:43 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec  6 11:22:11 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  6 14:05:08 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec  6 14:07:25 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec  6 14:53:17 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  6 15:15:17 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach (Maintenance)
Dec  6 16:53:12 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  6 17:22:43 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec  6 17:23:17 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen EHC1 (User)
Dec  6 17:30:35 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  6 18:13:45 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  6 18:55:07 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  6 19:10:51 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach (Maintenance)
Dec  6 19:26:26 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  6 22:27:04 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach (Maintenance)
Dec  7 00:52:31 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: RTC (Alarm)
Dec  7 00:56:29 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  7 06:05:03 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.SleepTimer (SleepTimer)
Dec  7 06:41:45 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  7 11:56:50 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  7 14:04:00 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  7 15:31:08 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec  7 15:31:38 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen EHC1 (User)
Dec  7 15:58:23 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  7 16:20:29 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  7 16:46:12 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec  7 17:19:08 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  7 17:28:16 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  7 17:41:49 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach (Maintenance)
Dec  7 17:42:31 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach (Maintenance)
Dec  7 17:43:13 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: XHC1
Dec  7 17:46:15 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  7 19:28:46 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec  7 19:29:21 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach (Maintenance)
Dec  7 19:41:07 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidClose (Maintenance)
Dec  7 20:55:41 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  7 21:41:56 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  7 23:42:03 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  8 01:27:11 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidClose (Maintenance)
Dec  8 03:27:29 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: RTC (Alarm)
Dec  8 05:19:59 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.SleepTimer (SleepTimer)
Dec  8 06:36:01 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  8 07:01:03 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec  8 07:53:19 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  8 08:16:41 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec  8 15:30:17 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  8 15:59:16 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec  8 15:59:43 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  8 19:20:32 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec  8 19:25:15 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  8 20:25:40 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  8 22:08:34 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  8 22:29:02 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec  8 22:30:09 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  8 23:07:31 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  9 02:40:41 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: RTC (Alarm)
Dec  9 04:40:59 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: RTC (Alarm)
Dec  9 05:37:54 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec  9 06:07:24 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  9 07:16:09 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  9 08:00:37 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec  9 11:11:14 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  9 12:33:59 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  9 14:45:59 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  9 18:47:05 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec  9 20:10:16 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec  9 20:45:06 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 10 01:32:08 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: RTC (Alarm)
Dec 10 03:32:26 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: RTC (Alarm)
Dec 10 05:32:44 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: RTC (Alarm)
Dec 10 05:35:26 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec 10 06:50:51 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 10 08:27:40 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 10 09:10:24 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 10 09:40:49 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: XHC1
Dec 10 11:02:03 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec 10 12:03:46 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 10 13:08:33 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 10 14:20:53 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec 10 14:22:22 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 10 16:07:31 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 10 16:43:39 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 10 17:27:00 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 11 03:22:19 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec 11 03:23:32 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach (Maintenance)
Dec 11 05:54:58 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec 11 06:49:10 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec 11 11:10:10 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 11 11:54:42 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec 11 11:56:54 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 11 12:45:07 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 11 13:47:50 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec 11 14:41:33 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec 11 15:28:02 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 11 15:46:43 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 11 16:45:34 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
Dec 11 16:46:06 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 11 16:57:14 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 11 18:03:09 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACAttach EHC1 (Maintenance)
Dec 11 20:11:39 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec 12 04:43:02 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: RTC (Alarm)
Dec 12 06:43:21 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: RTC (Alarm)
Dec 12 06:45:12 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec 12 08:39:59 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EHC1
Dec 12 12:33:04 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
Dec 12 13:17:16 Tharindus-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.LidOpen (User)
 

Moshe1010

macrumors 6502a
Original poster
Jun 27, 2010
874
99
OK, your Mac thinks it's supposed to wake on AC attach/detach. Check acwake (pmset -g). If it's 0 and you have installed MacBook Pro/Air update (2.0, it was released at the beginning of November and it resurfaced recently), you may have similar problem as other users. No 100% working solution at the moment.
yes, it's 0: (I've installed all the available updates)

Active Profiles:
Battery Power -1*
AC Power -1
Currently in use:
standbydelay 4200
standby 1
halfdim 1
hibernatefile /var/vm/sleepimage
darkwakes 0
gpuswitch 2
disksleep 10
sleep 10
autopoweroffdelay 14400
hibernatemode 3
autopoweroff 1
ttyskeepawake 1
displaysleep 10
acwake 0
lidwake 1


And yes, it happend to me right now when I unplugged the power:
Dec 12 16:39:31 Mikes-MacBook-Pro kernel[0] <Debug>: Wake reason: EC.ACDetach (Maintenance)
 
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