Air does not sleep when lid is closed?

My friend just bought a new 13" Air and it works great except he was confused at the fact that when he closes the lid the laptop does not go to sleep. He noticed this when he closed the laptop in a dark room and the light from the screen was leaking out. Has anyone else experienced this problem? I know on older Apple laptops sleep mode was activated when a magnet in the LCD housing hit a sensor in the upper case when you closed the lid; is this still the case? And if so anyone know where the sensor is located just so I can run a magnet over it to see what happens?

I don't see this behavior at all, but I'm wondering how does he know it's on? When closed the screen virtually seals against the bottom. If the Apple logos lit up? If so then it's obviously on. If not then it's not on.
If it's staying on, it's likely a software problem. Either there is an app or something installed than isn't sleeping or an OS problem. If it really isn't sleeping and no questionable apps have been installed, backing up and reinstalling the OS would likely fix it.

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just to find it on an hour later and too hot to touch.
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Alum Powerbook 1ghz Does not Sleep when Lid is Closed

Hi,
I have a 1ghz Aluminum Powerbook with the lower memory slot issue. Everything is working great (besides the memory issue of course), and this one other bug: When I close the lid, the powerbook does not go to sleep. I have to manually select "Sleep" for it to go to sleep. The sleep light comes on and all, but I guess it just doesn't recognize the display lid shut.
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Hmm, the lid problem is interesting - if the Powerbook doesn't wake up from opening the lid, however, then it's most likely a sensor problem, which as you found has an easy workaround. YOu could always go to the Power Section of the System Profiler and seeing if the "wake on Clamshell open" and "Wake on Clamshell Closed" are set to Yes and No respectively. If they aren't those settings, then resetting the Power Management Unit might help, or just reset the PMU and see what happens (info here: http://docs.info.apple.com/article.html?artnum=14449)
As far as I know, (which probably isn't much!) the memory slot issue is just annoying, and probably won't do much damage to your computer. However, (and probably what you don't want to hear!) when my computer suffered the problem 2 weeks ago, I noticed that the memory door seemed to be a little bit warmer than usual and the rest of the computer in general. So I took it to the Mac Genius in the Birmingham Apple Store and they had the logic board replaced. Now, it seems to be running at a normal temperature. But looking back on it now, the temperature change may have been just subjective - ah well, your mileage may vary.
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Computer does not sleep when lid is closed

Hey everyone,
Until about 15 minutes ago I had my powerbook G4 set to sleep whenever I closed the lid. Well, now it does not want to.
I installed a screensaver and used it for a little bit, and now uninstalled it.
The problem is, ever since installing and selecting that screensaver my computer won't sleep when I close the lid.
What is the process to restore this and get it so that it sleeps when I close the lid?
Thanks in advance!

Hey everyone,
Until about 15 minutes ago I had my powerbook G4 set to sleep whenever I closed the lid. Well, now it does not want to.
I installed a screensaver and used it for a little bit, and now uninstalled it.
The problem is, ever since installing and selecting that screensaver my computer won't sleep when I close the lid.
What is the process to restore this and get it so that it sleeps when I close the lid?
Thanks in advance!

How can i get my macbook pro too stay on and not sleep when lid is closed?

how can i get my macbook pro too stay on and not sleep when lid is closed?

If the machine is asleep, lid closed, and you plug in to an external monitor and an external USB keyboard, the machine will wake, anbd reconfigure the screen resolution for the external monitor, Once it has made this configuration change, you can open the lid and it will continue to address only the external monitor. At least that's how my early MacBook Pro unibody 13" works. It seems to run a bit cooler this way. It gets quite toasty with the lid closed while doing anything demanding and you are more likely to hear the fan come on. I have not seen any temps that would cause alarm, but I do get a high speed (6000 rpm), noisy fan sometimes with the lid closed, .
If you operate in the open-lid, external monitor only mode, if you deactivate the monitor for any reason, when it reactivates it will be running both screens, with all the navigation hassles this entails, so I generally set it not to deactivate the screen when in this mode.
Thus I agree with those who say that some of the cooling air is drawn in around the keyboard, the difference in cooling performance is observable. If you activate istat pro, get the computer hot running in clamshell mode, and open the lid, you can watch the CPU temp drop by a few degrees C within a couple minutes. It isn't a huge difference, but enough the lower the fan speeds.

How can I get my MacBook to stay on and not sleep when lid is closed?

How can I get my MacBook to stay on and not sleep when lid is closed?

try this: http://www.macupdate.com/app/mac/37991/nosleep

MBB Does Not Sleep When Lid Shut

My macbook does not sleep when I shut the lid. This happened recently after I had my fan repaired. I also updated the OS at the same time, so I'm not sure which triggered the problem.
I would have to manually select sleep before shutting the lid; and I would have to press the space bar after I've opened the lid to wake it.
The following thread applies to a MBP. Apparently my problem might be a faulty latch.
http://discussions.apple.com/thread.jspa?messageID=5325605&tstart=0
I've reseted my PRAM, but that didn't work. My machine has been in for repairs 4 times (Fan, Logic Board, and the top case has been replaced twice due to cracks).
I'm wondering if I should send it back to the service centre to have it looked at. Apparently, if this is not a hardware problem, it won't be covered under AppleCare, and I would be charge. So just want to make sure...

I tried doing this fix using the guide on http://ifixit.com to dismantle my MacBook and find the battery/lid detector cable which indeed seemed loose at its connector just next to the headphone jack, but when I reassembled the mac still does not detect lid closing and now it doesn't even detect the battery anymore! Yikes! Looks like a trip to the apple store is required anyway.

X120e does not sleep when lid closed

I found another similar post, however it was resolved by the individual reinstalling the operating system.
My issue is more complicated. I have made sure everything is up to date, all the settings that tell the system to sleep when the lid is closed are turned on. I have even turned those settings off off, just so I could turn them back on to make sure there wasn't something quirky about it.
I have tried restoring the system to factory settings using the recovery partition, as well as discs burned from the program that came with the computer. I have tried clean install from Windows 7, 8, and 8.1 discs.
The unit still does not sleep. I don't ever remembering it being able to. I once closed the display thinking it would sleep (power was plugged in). Woke up the next day, went to work for 8 hours, came back and felt that the system was really hot. Opened the lid and the screen was exactly as I had left it the day before.
When I first got the system in 2012, the screen did not work, so I actually had to send it to Atlanta, GA for repairs. It came back quickly, and it still did not work, so I actually sent it back to Atlanta, GA's repair center a second time in the same week. It came back working and I left it alone. I never tested the sleep/wake because I always just turned the system off when I was done with it, but now I am back in school and this little computer comes in handy, but I don't want to turn off the system manually going from class to class when I need to pack it away in my bag.
Could there be a hardware issue? Something inside not connected? This laptop works perfectly EXCEPT for the fact that it will not sleep when the lid is closed. It is out of warranty but had I known this was an issue while it was still under warranty, I would have inquired. This unit is in pretty fantastic shape, looks brand new too. No damage, never been dropped, and only ever handled by me (never loaned out).
How can I fix this?

Thanks for the reply, gat0gelat0.
Yes, those settings were the first things I checked. I also tried changing it to "Do nothing", then changing back to the sleeping option. It still does nothing when I close the lid.
I would like the functionality of it going to sleep when I close the lid for the convenience, like when class ends, I have to rush to my next class, I just want to close the lid, put it in my bag and run to the next class. Keyboard shortcuts like Fn-F4 work, but this laptop should have the functionality I am describing, and I want to figure out why it isn't working and how to fix it.
I suspect there is an issue with whatever is used hardware wise to sleep the machine. Either it's not being triggered, or it's not there, or it's broken. I've tried running a magnet around the bezel of the LCD screen as well as around the palm rest bezel and there is no activity as I've read that many laptops trigger sleep by interaction by a magnet. Still nothing.

Screen replaced on 17in--now PB will not sleep when lid is closed

I recently replaced my screen to a glossier LG Philips lp171w02 screen. My problems are that my pb will not go to sleep when I close the lid and the brightness keys also are not functioning. Any help would be greatly appreciated.
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Is there a way to non-destructively remove this magnet from my 17" PowerBook (older one with 1440x900 display)? I don't like that my PowerBook sleeps when I close it, and I've asked Apple if there is a way to disable this functionality. Short of plugging in an external display, they told me no.
This option is built in to the Windows OS, and I've grown quite accustomed to putting my laptops to sleep manually. I'd really like to be able to have the lid closed and still let programs run, downloads continue, etc.

MacBook will not sleep when lid is closed

I just noticed in the last few weeks that whenever I close my MacBook it will not go to sleep. I've had it only a year and protect it like a baby so I'm not sure what happened (maybe a recent update is buggy).
I've done some research and it seems that there are some problems with MacBook Pros but not so much with MacBooks.
Is there anyone out there that is having the same problem or has had the same problem and has fixed it?
I've tried reseting the SMC and PRAM and repairing the permissions...any other suggestions? I don't feel like going down to the Apple Store unless my baby is in immediate danger.
Thanks

Console.app will allow you to check various logs. The root system one should be reflecting any major issues, though be aware the description may not be in plain english.
Another issue I found is that certain classes of USB storage devices can wake the mac back up immediately after it sleeps on lid shut, especially external multicard readers (sd/mmc combo etc). If there is any USB equipment, try unplugging it all first before closing the lid and see if you have a different outcome.
Re,
Brad T.

MacBook Pro does not sleep when lid closed

Hi there. I recently upgraded my MacBook Pro from Snow Leopard to Mountain Lion. Before the upgrade my mac would sleep automatically when the lid closed. However, ever since I've upgraded, when I close the lid, my mac doesn't go to sleep. However, if my mac isn't plugged in (running off the built in battery) it goes to sleep. I looked through system preferences and I can't seem to find any settings relating to this, does anyone have any suggestion on what's happening and how I can fix it? Many thanks in advanced.

Test after each of the following steps that you haven’t already tried: Step 1 Apple menu > System Preferences > Print & Scan > Open Print QueueCheck all printers for unfinished jobs. Deal with any you find. Step 2 Apple menu > System Preferences > Energy Saver > Power Adapter > Wake for network access: uncheck. You may need to unlock the preference pane by clicking the lock icon in the lower left corner and entering your administrator password. Step 3 Apple menu > System Preferences > Energy Saver > Schedule > Start up or wake: uncheck. Step 4 Apple menu > System Preferences > Sharing: uncheck all boxes. Step 5 Disconnect all wired peripherals except keyboard, mouse or trackball, and monitor, if applicable. Step 6 Launch the Activity Monitor application. Select All Processes from the menu in the toolbar of the Activity Monitor window, if not already selected. Enter “powerd” (without the quotes) in the "Filter" text field. Select the powerd process and click the Quit Process button in the toobar (stop-sign icon.) In the sheet that opens, click Force Quit. You’ll be prompted for your administrator password. The process will be relaunched immediately. Step 7 Reset the SMC. Step 8 Boot in safe mode and log in. The instructions provided by Apple are as follows:
Shut down your computer, wait 30 seconds, and then hold down the shift key while pressing the power button.
When you see the gray Apple logo, release the shift key.
If you are prompted to log in, type your password, and then hold down the shift key again as you clickLog in.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Note: If FileVault is enabled under OS X 10.7 or later, or if a firmware password is set, or if the boot volume is a software RAID, you can’t boot in safe mode. Safe mode is much slower to boot and run than normal. Don’t launch any applicationsat first. If sleep still doesn’t work properly, back up all data and reinstall the OS. After that, if you still have the issue, make a “Genius” appointment at an Apple Store to have the machine tested. If sleep now works as expected, go on to the next step. Step 9 Still in safe mode, launch the usual set of applications that are running when you have the problem, including your login items, one at a time, testing after each one. Some applications may not work; skip them. You might be able to identify the cause of the problem this way. Step 10 If sleep is still working after you’ve launched all the usual applications, reboot as usual (not in safe mode) and test again. If sleep still works, you’re done, at least for the moment. If you still have the sleep issue after booting out of safe mode, post again.

MacBook Pro does not sleep when display is closed??? (occasional problem)

Sometimes when I close my MBP display and put it in its case I find after coming back to it that it has not gone to sleep and the fans are running full speed. This has only happened twice (but still twice in two weeks is pretty bad), and it wasnt away for long but I can imagine this being VERY BAD for the computer.
Has anyone else had this problem???

This is worrisome.
I have the same problem. Several times I've closed the lid, put it in my case, and head home. When I get the computer out it can be piping hot. I'm worried that this may damage the machine, or even start a fire.
This is a new MBP. I've made no changes to power management settings. Since this happens frequently, I've tried closing the lid, unplugging everything and waiting a minute before moving it and putting it in my bad, but I still get the problem. (I even stare it at really hard, willing it to be asleep -- to no avail.) Of course, I shouldn't have to go through The 17 Steps of Putting a MacBook Pro to Sleep. I should simply be able to close the lid, unplug, throw it in its bag and go. Or maybe I'll unplug first, etc. It should be able to handle any normal scenario.
I may have to return this computer.

Screen Does not Lock when Lid is Closed

Occasionally when closing the lid and waking up later, the screen is not locked. The Console log shows the following error message:
loginwindow[66]: ERROR | -[LWBuiltInScreenLockAuthLion closeAuthAndReset:] | Attempted to remove an observer when not observing

Any solutions?
Having the same problem. Wondering where the Internet sh*t storm is with a security problem of this size...

Using NoSleep for MBP going to sleep when lid is closed

hy,
Is there any problem if I Use Nosleep (http://www.macupdate.com/app/mac/37991/nosleep) to keep my mac from going to sleep when lid is closed?

1. Reset PRAM. http://support.apple.com/kb/PH4405
2. Reset SMC.     http://support.apple.com/kb/HT3964
    Choose the method for:
    "Resetting SMC on portables with a battery you should not remove on your own".

Powerbook does not sleep when the lid is closed

my tibook does not go to sleep when i close the lid. the screen stays on when the lid is closed. the screen was replaced a few months ago. i have to hit the power button and choose sleep or choose sleep from the menu. does anyone know how to fix this. Thanks.

Hi, fatchance. You have a hardware issue. The reed switch that puts the PB to sleep when it is closed is a two-part device. The latch mechanism in the main body of the Powerbook contains a magnet (which you can detect by moving a paper clip over it), and the switch itself is located inside the small latch opening in the display bezel. When the display is closed, the magnet is supposed to actuate the switch, putting the PB to sleep. If that isn't happening on your PB, the switch is broken or its wiring is damaged. Either way, the remedy will be to replace the entire display assembly. It's made not to be disassembled. Most technicians won't do so, because of the great likelihood of damaging the display housing/bezel or the display itself while prying it apart (it's epoxied together). Since the display is the PB's most costly part, replacing it merely to fix your reed switch would be a poor bargain, and I can't recommend it. Just put the PB to sleep manually or set a suitable sleep delay in the Energy Saver control pane instead.

Air does not sleep when lid is closed?

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