OS X Lion 10.7 Sleep Issue

My one doesn't go to sleep when the power adapter is unplugged and Mail is running. But as soon as Mail isn't running it goes to sleep wether the power adapter is plugged in or not.

Thanks jcarpio,

Just followed these commands, discovered that Internet Sharing was keeping my Macbook Pro awake (but only when connected to the power adapter), turned that sharing option off, and it sleeps as it used to under Snow Leopard.

Tom

t_wex, does yours also go to sleep when Mail is running?

I have all sharing off and it still won't go to sleep as long as I don't quit Mail...

Hi W M R

I don't have any problems with Mail being open and getting the Macbook Pro to sleep. Seems to be behaving itself as normal after locating and sorting the conflict with Internet Sharing. Sorry to hear you're still having issues.

Also having the same problem, ApexRon.

I use my MBP plugged into the magsafe adapter, and to an external monitor. It won't sleep when I close the lid or manually press sleep - the screens go black, the indicator light goes pale (but not completely off), then my computer gets very hot, with the fans spinning up to full speed.

I have tried it w/o the the monitor/magsafe plugged in, and I get the same problem.

Turned off internet sharing, all that jazz but still doesn't work :S

Help Apple!

I am always moving between classes/work with my computer, don't want to have to shut it down EVERY time..

I'm running on a non-unibody 2008 2.4GHz MBP

I was having the sleep issue in which my MBP wouldn't sleep with the lid open; closing the lid put it to sleep but it wouldn't sleep according to the settings in Energy preferences. Tried repair permissions, reset PRAM and SMC reset, even deleted System Preferences folder as suggested by another post in this thread; nada.

So I did a clean install of Lion, meaning I erased the existing Lion install, re-installed Lion on the HDD then reinstalled my apps, checking to see if the MBP would sleep after each install. Everything was great until I tried installing Paragon NTFS (an app that allows OS X to write to NTFS disks); as soon as I installed and restarted, no sleep. When I uninstalled the app, sleep came back.

This has been documented by another user elsewhere on this discussion site:

https://discussions.apple.com/thread/2510373?start=0&tstart=0

Hope this helps someone....

I found that iStat Pro causes the same issue, simply removing it did not restore sleep. I repaired permissions, dumped the cache files and reset PRAM then sleep returned.

It worked for me! Thanks

I have the same problem. I just talked to Apple support for over an hour. Tried SMC and PRAM reset, turned all sharing off. Finally, after deliberation, they told me this is how 10.7 is supposed to work. It's called Closed Clamshell Mode and it goes into effect by default when the power cord and a monitor are connected. There should be an option in preferences to turn this off (so that the computer sleeps when you close the lid). They suggested going to http://www.apple.com/feedback/ to request this update.

@mbpculture - with your power cord and monitor connected, clamshell closed, can you sleep your computer using the:

1) Apple > Sleep menu option

2) Option-Command-Eject keyboard combo

The fix I suggested earlier (SystemConfiguration folder fix) allows these two options to get my system to sleep -- this is what stopped working for me shortly after installing Lion.

ADub128,

Yes, I can get the computer to sleep doing both of the things you mentioned. It just doesn't sleep when I 1) close the lid or 2) leave the computer open and idle (I configured system preferences to put it to sleep when idle for x minutes).

Everything worked fine before Lion. Apple told me this is how Lion is supposed to work. It's counter-intuitive and contrary to all previous versions of OS 10, which is why I (and the Apple tech) suggest giving Apple feedback on this matter.

I'm running a 17" 2011 MBP on a 30" Apple Cinema Display

@mbpculture - got it. My system behaves just like yours now ... no auto sleep after idle period. For me, this is not a big deal. My *big* problem was with Lion not being able to sleep properly at all from any of the manual sleep options -- closing the lid (no monitor attached), and menu or keyboard options (with or without monitor attached).

I've tried everything as suggested in this thread with no success. My MacBook Pro goes to sleep manually without any problems but still won't go to sleep automatically as long as i.e. Mail is running.