can we hibernate/suspend a system?[Solved]

gen-next · Last edited by gen-next on Sat Nov 19, 2005 1:12 am; edited 1 time in total

Can someone please explain to me in a bit detail what changes need to be made in the kernel and also the grub to enable system suspend. I want to hibernate the system so that the next time i start the whole system starts from where it was left.

I searched the forums but could not find any information detailing the same.

Any help would be greately appreciated. Also describe the risks involved and is it actually worth the risk considering the fact that i am not talking about a laptop, rather a desktop system.

Thanks,
vb
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gen-next says it alll!!.

gen-next · Posted: Fri Nov 18, 2005 8:58 pm Post subject:

Now i got somewhere, i browsed more and found that one needs to install suspend 2. i.e

frostschutz · Advocate Joined: 22 Feb 2005 Posts: 2977 Location: Germany

Do you actually need the feature?

The reason I'm asking is that it's uninteresting on desktop systems for the most time, because you don't carry them around and don't turn them off and on all the time. For a laptop it's great, you can leave things where they are, shut it, and continue working where you left off later, without having to sustain power all the time in between.

I'm not up-to-date with suspending to hardware right now, but my past experience was that if it worked at all, then only on specific laptops (because it was tested with only those devices), and that there were a hell of a load of problems with specific hardware that ceased working after waking the machine up, because the drivers were not reinitialized properly or whatever.

If your goal is to get faster startup times, there are better methods to do that, like throwing out unnecessary init scripts, or parallelizing / backgrounding them.

pjp · Administrator Joined: 16 Apr 2002 Posts: 20585

frostschutz · Advocate Joined: 22 Feb 2005 Posts: 2977 Location: Germany

Earthwings · Posted: Sat Nov 19, 2005 12:02 am Post subject:

There are detailed instructions on http://www.gentoo.org/doc/en/power-management-guide.xml#doc_chap7
It depends on your hardware whether it works - the only way to find out is testing it. Just make a backup of important data before using it :wink:

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gen-next · Posted: Sat Nov 19, 2005 12:23 am Post subject:

It works!! suspend2

I emerged suspend2-sources and then followed this http://gentoo-wiki.com/HOWTO_Software_Suspend_v2 and bingo now i have hibernate working on my system.

Hurray!!

vb
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gen-next says it alll!!.