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Why does my new MacBook Pro keep waking up from sleep?

T

tekmoe

macrumors 68000
Original poster
Feb 12, 2005
1,729
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I'm on my third MacBook Pro and all three of them keep waking up from sleep mode. I have reformatted and reinstalled the OS each time. I have reset the SMC and the PRAM. Still no resolution.

It happened again this morning and I started digging thru the Console logs. I found this...

10/29/08 8:33:11 AM kernel Wake reason = OHC2

Can someone please tell me what the OHC2 code means??? I have no idea where to find the documentation on these codes. If I wake my computer up from sleep by pressing the power button, the Wake reason code is PWRB.
 
Do you have any USB/Firewire/Bluetooth devices connected?

Do you have an Apple Remote? If not, do you still have the IR receiver on (it's on by default; System Preferences->Security->Disable remote control infrared receiver).
 
bstreiff said:
Do you have any USB/Firewire/Bluetooth devices connected?

Do you have an Apple Remote? If not, do you still have the IR receiver on (it's on by default; System Preferences->Security->Disable remote control infrared receiver).
Click to expand...

I usually have my USB mouse connected as well as my Bluetooth keyboard. I always disconnect the USB mouse before putting the Mac to sleep. I do not turn off bluetooth but then I have never turned off bluetooth on the last half-dozen Mac notebooks I have owned. I'm using it exactly the same as I have always used my PowerBooks and MacBook Pro's.

Also, there is a 5 page thread over on the Apple Discussion boards about this very same issue.

*edit*

And no, I do not have an Apple IR remote.
 
Hm. The keyboard might be waking it up-- Try turning off System Preferences->Keyboard & Mouse->Bluetooth->Allow Bluetooth devices to wake this computer.

Other than that: 'OHC2' probably refers to the (second) OHCI USB interface; meaning that something that's using USB (could be something internal; both the Bluetooth receiver and the IR receiver have internal USB connections) is signaling a wake event.
 
bstreiff said:
Hm. The keyboard might be waking it up-- Try turning off System Preferences->Keyboard & Mouse->Bluetooth->Allow Bluetooth devices to wake this computer.

Other than that: 'OHC2' probably refers to the (second) OHCI USB interface; meaning that something that's using USB (could be something internal; both the Bluetooth receiver and the IR receiver have internal USB connections) is signaling a wake event.
Click to expand...

Interesting...

That at least gives me some clues. Thanks bstreiff.
 
do you stand or walk in front of it?
i dunno but when my computer goes to sleep or even just like turns of monitor when i stand in front of my macbook after being away the thing turns on right then and there! is the isight sensing the stuff or sumtin?
 
thomahawk said:
do you stand or walk in front of it?
i dunno but when my computer goes to sleep or even just like turns of monitor when i stand in front of my macbook after being away the thing turns on right then and there! is the isight sensing the stuff or sumtin?
Click to expand...

Nope. It turned on earlier this morning after I put it to sleep and stuck it in my backpack. The timestamp of 8:33am is when I was driving my car, specifically on the tollway (lol). Seems like everytime it has woke out of sleep, it is when I am driving my car. Very mysterious indeed...
 
tekmoe said:
Nope. It turned on earlier this morning after I put it to sleep and stuck it in my backpack. The timestamp of 8:33am is when I was driving my car, specifically on the tollway (lol). Seems like everytime it has woke out of sleep, it is when I am driving my car. Very mysterious indeed...
Click to expand...

Interesting. I'm having the same issue. When I leave work, I put it to sleep and stick it in my backpack. By the time I get home and pull out the computer (45 min or so) it is warm, the fans are blowing, and awake.

I can't get it to stay asleep at all. I wonder what's up with this.
 
I wonder if it's possible that, while it's being jostled around in your bag, there's just enough pressure to press a key on the keyboard. Or, similarly, perhaps it registers a mouse click off of the trackpad?
 
Mine randomly wakes from sleep in my bag too... The only good thing is that today my regular cheese sandwich became a grilled cheese sandwich :D

Then when I open it up, fans are roaring and I can't do anything with it without holding my power button down and restarting it.
 
i had the same problem, But for me it was time machine constantly syncing. so i unpluged my external hard drive.
 
Night terrors.

There. I solved it. :cool:

I have had a couple sleep/wake issues with my MBP 1,2 17", but nothing persistent.
 
I believe this issue is solved by disabling "Allow bluetooth to wake this computer" :)

Seems to have worked for me so far...

-Rich-
 
I have this issue. It took me forever but I tracked it to my mouse. I have an LX7 logitech mouse and evidently when it is on it wakes my comp from sleep. The solution was to turn it off before going to sleep.

I see you turn your mouse off tho, so idk.

note: this is with a 2.2 ghz stock MBP (older model)
 
This happened to me today for the first time. I usually power my computer off but today I just let it sleep in my backpack. When I removed it from my backpack it was almost too hot to touch.

Bluetooth was off and nothing was plugged into any ports. Guess I'm going to have to continue just shutting it down on the move until Apple releases an update.
 
Why does my new MacBook Pro keep waking up from sleep?

It seems that my MacBook Pro doesn't stay at sleep if bluetooth is on. If I shutdown bluetooth and put computer sleep it won't wake up by it self in a few seconds. It won't even help if there aren't any bluetooth devices connected. I just have to shut bluetooth down.

Maybe this is kernel problem?
I have Darwin Kernel Version 10.4.0 xnu-1504.7.4~1/RELEASE_I386 i386.
Hopefully this is repaired in next kernel update.
 
Actually it seemed that you can leave bluetooth on. Just disable "Allow Bluetooth device to wake this computer". Option is found at System Preferences -> Bluetooth -> Advanced (button at bottom right).
 
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