Macbook Air won't wake on demand

I just bought a new Macbook Air to replace my 2009 Macbook Pro. I used Logmein all the time to access my laptop when it was sitting home. I'd usually leave it plugged in, lid open, and it would be asleep.
Now, with this new computer, I cannot wake on demand. Once it goes to sleep, I cannot access it with Logmein.
In system preferences/energy saver, i have "Wake for Wi-Fi network access" checked.
In system preferences/sharing, i have screen sharing turned on.
in Logmein preferences, i have "Enable Wake 'On LAN' from Sleeping mode" checked.
I don't feel like anything is set up differently than my old computer, but for some reason it does not work.
Anybody have any help?

Exactly same problem. wake up from sleeps causes black screen (not always, but often).
moving the mouse unvovers the regular login-screen. then everthing works fine.
didn't try to close and reopen thee lid. thanks for the tip!
PRAM & NVRAM reset and safe boot already tried. unfortunately did not change anything.
Great machine anyway!
Thanks for any help!

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MacBook Air won't wake up after sleep

I've been reporting sleep problems with my iMac for a while in the past. No-one here would take it seriously (probably hardware, your reports are incidents, no-one else has these problems) so I just went away and I disabled the sleep function of my iMac alltogether, and I won't select the "sleep" button in the login screen anymore, or select "sleep" from the apple menu. No sleep no problem, right?
*Well, I bought a Macbook Air three days ago, and in those three days I have had TWO occasions already where I wanted to wake the Macbook after sleep* (closed lid) and it wouldn't wake up. All I get is the rainbow mouse pointer and the Macbook is unusable unless I reboot it.
Mind you, nothing is connected to the macbook but the power cable, and I find it hard to believe that my Macbook Air would also suffer from 'hardware problems' like my iMac alledgedly is.
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What gives, and can I expect Apple to do anything about this problem that I've been having since I bought my iMac more than a year ago, and is now also spoiling my MacBook Air experience?

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I also occasionally use an external Apple 24' Screen (Non LED) and find that the MBAir will often freeze when you plug that into it or unplug it from it.. Perhaps I have a hardware fault on the MB Air? Or will this be fixed in software?

MacBook Air won't wake after shutting lid

Hey guys,
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The problem is, it will not un-sleep anymore. Usuall just opening the lid would do this, but now it just stays blank on both monitors. Pressing the on button elicits no response either.
To get back to the computer I have to hold on button down for 5 seconds. Presumably this forces full shutdown, Then pressing the on button will do a full load from shutdown.
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Exactly same problem. wake up from sleeps causes black screen (not always, but often).
moving the mouse unvovers the regular login-screen. then everthing works fine.
didn't try to close and reopen thee lid. thanks for the tip!
PRAM & NVRAM reset and safe boot already tried. unfortunately did not change anything.
Great machine anyway!
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Just a black screen. I can restart after a few long pushes of the power button, and then it comes back and behaves normally. Is Apple working on this bug?

I am having exactly the same problem.
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I've just had something similar with my 9 month old retina MacBook Pro.
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Device Name:          bq20z451
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PCB Lot Code:          0
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Hardware Revision:          000a
Cell Revision:          162
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Fully Charged:          No
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Full Charge Capacity (mAh):          6463
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Voltage (mV):          7478
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Welcome to Apple Support Communities
A green light means that your battery is full or that it can't be detected. If you can't start up the Mac, probably your logic board or battery aren't working.
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See this article:
http://support.apple.com/kb/ht3964
Find the section that applies to your computer, and follow the instructions.
Shut down the computer.
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First, restart the Time Capsule by disconnecting the power adapter and reconnecting it. If other devices on the network can see it, you can skip this step.
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I have the exact same problem with my Macbook Pro OS 10.8.4. What happens is: I work on the train, press cmd/alt + eject to put to sleep..pop it in my bag...get home or office... open the lid...and nothing! Battery indicator shows I have plenty of juice but it will not wake up no matter what key I press.
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Hey Msazama30,
First, I would start off your troubleshooting by following the steps in this link:
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/TS2570
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Step by Step to fix your Mac
https://discussions.apple.com/docs/DOC-3353
Welcome to Apple Support Communities!
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Hi my brand new MacBook Air won't turn on all the way. If I try to restart it or shut it down, it will go like it is starting up, but goes to a gray screen and stays there. I can see the mouse and move it, but it won't turn all the way on. What is wrong with it? It had been working fine since I got it, but today it hasn't been.

You may have to see if troubleshooting this issue can help, though the instructions on a process of elimination by symptoms are tedious in the following support article, and are suggested to be performed ahead of trying the process described in the title.
•Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
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http://support.apple.com/kb/HT1379
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http://www.apple.com/support/contact/
Hopefully this helps somewhat.
Good luck & happy computing!

Macbook Air won't wake on demand

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