Q: Problem with waking from sleep with 10.8.2

We need an developer subscription ($99 a year) to download pre-release software.

Be careful installing pre-release (beta) software. It may contain test code that will slow down your system and may contain bugs. Also be sure you read the licensing agreement. Apple limits where pre-release software may be installed and how it may be used.

In a test enviornment I have NOT seen any improvement in the wake from sleep issue.

Chet Rindfuss is right : you must be carreful using this kind of software and this new version could bring you desagreaments.

For anyone without adventurous temperament it is safer to wait until the official release throught Software Update in the Apple Menu is available.

Maybe, probably, there are multiple possible causes to the "not waking up" problem of our Mac OS 10.8 machines, and what worked for me may not work for others. That is another good reason not to act and just wait.

As for the "Pay $99 to enroll" I know that you can register for free somewhere but because https://developer.apple.com/programs/register/ is in maintenance now I can't go further to see where is the link for it. You don't get access to all software with a free registration but hopefully you are allowed to download System updates.

Mac Pro is running for more than a week now without any problem under Mac OS 10.8.3 Build 12D38 :

Mac-Pro-du-Bureau:~ ld$ uname -r

12.3.0

Mac-Pro-du-Bureau:~ ld$ uptime

6:55  up 7 days, 22:38, 3 users, load averages: 1.73 1.49 1.21

Mac-Pro-du-Bureau:~ ld$ uptime

8:24  up 11 days, 7 mins, 3 users, load averages: 0.94 0.83 0.78

11 days without locked black screen : for me the update works very well. But I have to restart my machine today and uptime will restart from scratch, that's why I post here before.

Also, https://developer.apple.com/programs/register/ was reopened, so I searched for free registration and was not able to find any. Sorry, I did not know Apple is charging you now if you want to discover programmation throught its tools, like I did a couple of years ago. I don't like it but my point of view won't change anything .

You'll have to wait until the next official update throught Software Update if you are not a registred developer.

Althouth it seems like a very simple solution, I too with a late 2010 MBP have the same 'wake from sleep' issue that has seemingly plagued 1000's of people with no 10.8.3 release to address this issue.

I have found that when I am running the MBP on the battery, I do not seem to have this issue at all.

When I am running the MBP with the MagSafe Power Adapter, on many occaisoins, the lighted keyboard would be indicating that my power was fine but I too would experience the Black Screen of Nothing

I closed the cover, disconnected the MagSafe Power Adapter from the side of the MBP putting it back on ""Battery Power"" opened the MBP cover and it displays as normal. 

I have done this several times and although it could be conincidence, it is working every time.

I do realize 10.8.2 was an upgrade to allow Time Machine to ''backup'' even when the Machine was in sleep mode, and perhaps this has something to do with this "wake from sleep" issue.

In the IMAC world and another thread i'm sure, the Wi-FI issue of not working after sleep seems to be connected as well. The only thing I do to remedy that is to shut WI-FI off for about 2 minutes and then turn it back on again, and that solves that problem.

These are issues that MAC users SHOULD NOT have to deal with for sure and the size of this thread regarding the "Wake From Sleep" issue should be large enough to raise the eyebrows of Apple's best technicians.

We can only hope for another ''bug'' fix release in the near future.

CalChloe's answer fixed my 2007 iMac for now. Dump Caches & Cookies!

My iMac was hybernating deeper than a dormouse.

Quick question. If I delete Caches and Cookies from that folder what will I be deleting? Are these web based cookies from Safari?

Thanks.

Look I am also running OS X mountain lion 10.8.2 and after i put my computer to sleep its easy for me to wake it up by pressing any key. I face a problem that i can't wake my computer via touching the trackpad. Else everything is fine and hereby i don't need to restat it again. Try installing combo update to resolve the problem.

Will Apple ever fix this?  It's driving me crazy......

Me too : I have been without any trouble since december the 16 th and all a sudden it was back yesterday, and also today...

Something must have break it anew but what ? I'm pretty busy with this machine, changing software, installing or removing hardware, so it is hard to tell which thing I did or the computer did that broke it.

Another OS pre-release update came this night, hope this one will make me free of this most annoying bug.

I'm going to add my 2 cents here since I just bought another monitor for my Mac Pro as well as upgrading to ML all in the same week before facing the sleep/wake issue.

Bonfire posted earlier in this thread somewhere a link to an update from Nviida that worked instantly for me and I didn't have to remove/add/terminal anything.

I'm going to repost this link and hopefully it can help others: http://www.nvidia.com/object/macosx-304.00.05f02-driver.html

to find a fix we need to know what is a reason for that issue.my laptop is not awaking from sleep only when working on battery.if i connect the magsafe back - it wakes up from sleep.

what is the reason,graphic card drivers?what do you think causes the issue we all have?

My point of view is the problem is hard to fix because there isn't a single cause.

It appears that your Mac is asleep normally when something occurs that wakes it. Network activity, a timed maintence event, or a third-party program can fire the wake up signal. You Mac wakes as requested. Because the wake was not from the UI the Mac wakes in "dark wake / maintenance wake" mode. The display remains dark, keyboard, and mouse are not activated.

During the maintenance wake the Mac takes care of the condition that triggered the wake and then wants to go back to sleep. If you check the system log you should find a sleep command followed by a sleep failed command.

Programs can tell the system that they are not in a state to be put to sleep when the system wants to sleep. This is to protect critical operations. It also prevents your Mac from sleeping during a movie or when showing a Keynote presentation. Lots of other programs, both Apple and third-party, can tell the Mac not to sleep.

Something in the Mac tells the system not to go back to sleep following the maintenance wake. What that something is can be any app running at the time. On my machine its the XYZ app. On your Mac its the FGH app. On another user's machine its the ABC app. Or it might be a combination of apps.

The point is that during testing my Mac would wake in dark maintenance mode to handle the wake event normally. Once the event had been handled (all normal to this point), the Mac attempts to go back to sleep. This is where the sleep failure happens. The Mac never goes back to sleep.

When the user attempts to "wake" the Mac its not really alseep. It appeas to be asleep because the screen is dark. Nothing will wake the Mac because its already awake in the dark maintenance mode.

The bug really is finding out what is blocking the Mac from returning to sleep.

As always, this is my situation and others may be seeing other issues here. Bottom line. This is a complicated issue.

Problem remains :-(

Hope for a Fix in 10.8.3

Chet Rindfuss wrote:

 

My point of view is the problem is hard to fix because there isn't a single cause.

 

...

 

When the user attempts to "wake" the Mac its not really alseep. It appeas to be asleep because the screen is dark. Nothing will wake the Mac because its already awake in the dark maintenance mode.

 

The bug really is finding out what is blocking the Mac from returning to sleep.

 

As always, this is my situation and others may be seeing other issues here. Bottom line. This is a complicated issue.

I have to agree with Rindfuss, re; it's likely not isolated to one issue and complicated to identify. I would not expect a fix from Apple since it is likely caused by 3rd party software tha is not fully ML compatible.

I was able to isolate the issue and fix the problem by troubleshooting "Login Items":

It sounds like updating the SMC and graphics drivers has worked for some, but not others.

My advice would be:

1) to either try the trobleshooting suggestions made between these two forums (at your own risk, since some are rather invasive), or,

2) try a Full, Clean, Fresh reinstall of the OS and software - without Migration Assistant or Time Machine (otherwise you will just end up copying over the problem). Install Applications one at a time to test if the probelm reccurs. A lenghty process, but I don't think Apple is going to come to the rescue with an update on this one.