Graham Street wrote on 10/5/09 at 22:45

>
>Most of the time, the MBP hibernates (and the resumes) perfectly. But
>sometimes it doesn't hibernate. There's doesn't seem to be an obvious
>reason and mostly the same apps are running at the times it works and
>when it doesn't. I've disabled SmartReporter as I thought that was
>causing the problem, but it hasn't changed things. This is what happens
>...

do you mean hibernate ("deep sleep") specifically or just 'sleep'?

Deep sleep saves the contents of RAM tot he hard drive and is 
normally only done when the machine is almost exhausted 
battery-wise, and it takes noticably longer but is more stable 
(eg if battery fully empties). AFAIK this can only be activated 
by gentle hacking to operate all the time (eg through the System 
Pref "Hibernate").


'Normal' sleep is much quicker and doesn't save the contents to 
hard drive.


My last macbook (black edition) used to have a wake from sleep 
problem, which sounds similar to what is happening to you 
sometimes. My solution was to always use Hibernate, which is 
slightly irratating as you can't slam the lid shut and pick it 
up quickly -- you should not disturb it while it's saving to 
disk, apparently. But I got tired of the black screen/force 
restart cycle, losing work. I did reset the Power Manager and so 
on to no avail. You could look up resetting SMC or whatever is 
appropriate to your machine or look for Hibernate.


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