MBP 15" i7 wont automatically go to sleep

Goto
Library/Preferences/SystemConfiguration
Delete
com.apple.PowerManagement.plist
com.apple.AutoWake.plist
Reboot

Again set those preferences through "System Preferences"

Reboot again

Open a Terminal windows an type:

pmset -g

what are the results?

My 15" i7 has also been suffering from lack of automatic sleep. I think I've figured it out.

I tried all of the suggestions here (reset PRAM, reset SMC, delete various plist files) and nothing worked. I set up a new user on my Macbook Pro and logged in as the new user and noticed that automatic sleep worked for the new user. I started comparing processes and eventually narrowed it down to the Mail.app. If the Mail.app is active, then automatic sleep does not work.

I'm using the default power settings (10 minutes for display and computer). Mail.app is set to check every 5 minutes. These are the exact same settings that I use on my 17" Macbook Pro C2D and on my 15" Powerbook and those machines have no problems with automatic sleep.

There must be something peculiar to the new machines that is causing this.

Correction to my previous post -- if there is any app active in the dock, my 15" i7 will not automatically sleep. It's not just a Mail.app thing.

Hi there,

Just like the original poster

I've got a brand new i7 15" MBP, which is refusing to notice energy saver settings... Basically the thing will stay on all night if I don't manually sleep it, and with network access waking enabled its basically up all night !

I can put the machine to sleep myself no problem, its just the energy saver settings never seem to kick in.. After a reboot, sometimes the display sleeping will kick in, and on the rare occasion even a full system sleep.

I've done all the usual, PRAM resets, plist deletes, uninstalled software that could be playing up, but I'm honestly left thinking this is an OS bug at the point, maybe even an issue with the idle timer.

Hope Apple can fix. I recommend anyone suffering leaves feedback as a bug report.

Thanks in advance
Martin

Hey,

I'm having the same problem with my 15 in i5. Although I wasn't able to fix it, I found a decent workaround.

Just download "Please Sleep"
http://www.dragonone.com/products/macosx/pleasesleep/

It forces your mac to sleep at your desired time no matter what background apps are running. You can also customize it to allow it to stay awake when certain apps are running.

Hopefully apple will fix it soon but until then this is the best solution I can think of.

I can also confirm that my MBP fails to suspend when battery gets low... Instead of the nice suspend to memory and grey screen/white bars ticking back up when you power up again, I just get a fresh boot from scratch.

This isn't great for a brand new 2000 quid machine!

I left my machine in sleep all night last night, and was suprised to find out the damned thing has been awake for most of the night, despite 'wake for network access' being turned off.

I think power management on the i7's is a complete mess, as there is no reason it should wake itself with that option turned off...

Hope Apple can devise a fix soon.

Thanks
Martin

Same issue...

I've had some success by resetting SMC, but that success is short lived. Usually once I change states, i.e., from power to battery or the reverse, the auto sleep stops functioning again.

The fact that a 3rd party app "Please Sleep," solves the problem for most folks is another clear sign that the pref pane is not doing its job.

I'd rather not load a separate power management App, so would welcome any other ideas.

I'm in the same boat guys. Anyone reported the problem to apple?