[SOLVED] Hibernating while suspended.

Liuuutas · 2010-05-27 09:47:47

Hi there,

I did not found it anywhere, but wanted maybe anyone knows wheter it is possible to suspend to disk while the computer is suspended to ram? Well, there is suspend to both feature, but the hibernate does take place before the suspending to ram. I know, that OS X has such feature dubbed "Safe Sleep", but is there anything like that in Linux World?

Thanks in Advance.

P.S. I am not a OS X fan or anything, just wanted to know more about the possibilities of Linux.

Last edited by Liuuutas (2010-05-27 19:02:34)

hokasch · 2010-05-27 10:07:09

AFAIK OS X's safe sleep is exactly the same as "suspend to both", it hibernates/suspends in one go. I don't quite understand how it could possibly hibernate after it had been put to sleep, and what the advantage of that may be. Either way you have to wait for the hibernation to finish before you can savely move the laptop or cut the power.

Liuuutas · 2010-05-27 14:51:58

This is the wikipedia article: http://en.wikipedia.org/wiki/Hibernatio … ng)#Mac_OS

Well I know that wiki might not be the best source, but it could go to partial sleep where GPU is suspended and other unnecessary drivers are unloaded before the hibernation. Can that be possible?

hokasch · 2010-05-27 15:27:11

I don't know. I still don't understand why it would matter.

lucke · 2010-05-27 17:52:25

It's "suspend to both" indeed. Vista/7 does the same. You can achieve it with Linux with tuxonice or s2both from uswsusp.

Liuuutas · 2010-05-27 19:02:15

Well I thought if some components are put in a sleep mode, then maybe it would be possible to save more power when suspending to both? But I guess s2both is still good enough for doing the job.

hokasch · 2010-05-27 19:07:13

suspend to both puts everything in "sleep" mode. only ram is drawing power. but it saves to disk as well (hibernate), just in case you run out of power while in sleep. if you want it to draw no power at all, you'll have to hibernate only.

ngoonee · 2010-05-27 22:51:24

Actually, as I understand it the OSX variant does 'suspend to both' first, then wakes up 15 minutes later to go into full hibernation.

hokasch · 2010-05-27 23:00:20

ah! now I get it... that would actually make sense, kind of. not sure if I want my laptop inside the backpack to fire up the hd while I am riding my bike though...

edit: argh. suspend2both - no need to start the hd, just cut the power. not sure how they do that though.

Last edited by hokasch (2010-05-27 23:02:45)

ngoonee · 2010-05-27 23:03:43

You wouldn't, I think. That's just what they do, and contrary to popular opinion, just because Mac OSX does it doesn't mean its some magic bullet.

Now that I think about it, don't their laptops have motion sensors? They might be using those (if the integral of motion over a set period of time is higher than a threshold don't come out of suspend).

Arch Linux

#1 2010-05-27 09:47:47

[SOLVED] Hibernating while suspended.

#2 2010-05-27 10:07:09

Re: [SOLVED] Hibernating while suspended.

#3 2010-05-27 14:51:58

Re: [SOLVED] Hibernating while suspended.

#4 2010-05-27 15:27:11

Re: [SOLVED] Hibernating while suspended.

#5 2010-05-27 17:52:25

Re: [SOLVED] Hibernating while suspended.

#6 2010-05-27 19:02:15

Re: [SOLVED] Hibernating while suspended.

#7 2010-05-27 19:07:13

Re: [SOLVED] Hibernating while suspended.

#8 2010-05-27 22:51:24

Re: [SOLVED] Hibernating while suspended.

#9 2010-05-27 23:00:20

Re: [SOLVED] Hibernating while suspended.

#10 2010-05-27 23:03:43

Re: [SOLVED] Hibernating while suspended.

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