The Ultimate Guide for switching from a PC to a Mac
(Part 2 - coming soon)

Thursday, June 7, 2007

Deep Sleep!

A great tip submitted by Nessuno: Deep Sleep! The current version of OS X only lets you entirely shut down your computer or put it to sleep. Deep sleep (or safe sleep) is supported on the latest PowerBook G4 as well as all the newer Intel Macs. What it basically does is it copies the content of the Ram to the hard drive and entirely shuts down the computer. The regular sleep option leaves everything in the Ram and brings just enough power to the Ram to keep the data. This is especially a problem when the power goes out and your computer is asleep. You lose everything that was loaded. With the deep sleep however, there is absolutely no power needed and it won't, even slightly, discharge the battery of your laptop. You can pretty much see what deep sleep is about when your laptop runs out of battery. Just before missing power, the laptop copies the info that is in the ram to the hard drive and when you hook it up to the wall and wake it up, it boots and reloads exactly where you left by retrieving the whole info from the hard drive. There is unfortunately no way of using the "Deep Sleep" option on demand. A great widget can solve this issue! It is called "Midnight" and it is a free download here on Softpedia! Thanks for the great tip Nessuno!


Blogger Dan said...

Can this work with PowerPC Macs?

June 6, 2007 at 10:23 PM  
Blogger MacGeek said...

I think it is only compatible with the latest PowerBook G4 and the Intel Macs.


June 6, 2007 at 10:56 PM  
Blogger Mitch said...

geez... Great tip if I could use it...

June 7, 2007 at 12:09 AM  
Blogger Mike said...

Doesnt seem to be working on my powerbook G4. I downloaded the widget but can not check the box to enable "hibernation" ...Bummer

June 7, 2007 at 12:10 AM  
Blogger Besim said...

There's another widget called DeepSleep whhich works great on my PB G4 Alu.
Try it!

June 7, 2007 at 3:37 AM  
Blogger Mijail said...

DeepSleep Widget's website talks about how to enable this kind of hibernation on some non-supported macs.

June 7, 2007 at 5:24 AM  
Blogger bassoon said...

mmm. Installed as sounded good. Had my cpu at 80% and shot temperature up to 80 degrees. Only noticed after 30 minutes and so went to activity monitor and killed the process. Also their site crashed safari so not sure on this one. Deleted it now.

June 7, 2007 at 8:23 AM  
Blogger Lucas Acurcio said...

Exactly the same thing happened to me!

June 7, 2007 at 9:06 AM  
Blogger Denis said...

It does work on My PPC G4 and iBook G4

June 7, 2007 at 12:40 PM  
Blogger Andy said...

I used the instructions at

to enable Safe Sleep on my 12" Powerbook G4 first-rev.

However my experience was not so good, I think my batteries just couldn't handle the stress. They've been thoroughly used though, so others may see better results.

June 7, 2007 at 6:07 PM  
Blogger Diligence109 said... takes 75% of my CPU and my computers temps go crazy. it's a first version so it must be really poorly coded or something unfourtunate like that :( I'l just haul it out when I want the deep sleep, because it is a cool thing to have around though...

June 7, 2007 at 10:32 PM  
Blogger scotty said...

Seems like a good app, unfortunately every time I try to click the download link on the softpedia page, Safari quits and I get that 'closed unexpectadly' alert. Oh well.

June 10, 2007 at 5:13 PM  
Blogger adam said...

You can force a Macbook Pro to go into deep sleep by putting to sleep and then popping the battery out for a sec. Tis widget worked fine for me

October 3, 2007 at 9:32 AM  
Blogger Steve Berke said...

I enjoyed reading this article. PLease continue publishing helpful topics like this. Regards, from beddingstock

March 7, 2018 at 2:20 AM  

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