Re: Suspend to disk
From: Rolf Arne Schulze (raskall_at_gmail.com)
Date: 04/22/05
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Date: Fri, 22 Apr 2005 10:23:46 +0200
On Thu, 21 Apr 2005 22:36:57 GMT, Augustus SFX van Dusen wrote:
> I understand that some Linux kernels support a suspend-to-disk utility,
> whereby a Linux session can be saved to disk, so that one can continue
> with it on rebooting the next time. I have read some documentation on this
> subject, and I would like to have clarification on some aspects:
>
> 1) If, after suspending to disk, the computer is turned completely off
> (possibly even unplugged) is it still possible to retrieve the Linux
> session?
With suspend-to-disk, yes. Suspend to disk means that it writes all
the contents of the memory to the swap partition. You have to tell
your kernel on boot (from lilo.conf or menu.lst in grub) the partition
it should resume the session from, that is the swap partition. Suspend
to disk is the same as turning of your computer completeley, with the
difference that it writes the content of your memory to swap.
> 2) Is it necessary to have a swap partition specifically devoted to the
> suspend-to-disk job, or can the swap partition used by the OS itself be
> used for that purpose?
No, its not necessary. Just make sure your swap partition is bigger
than your amount of memory.
> 3) Do all vanilla 2.4 and 2.6 kernels support suspend-to-disk? Is it
> necessary to apply patches to some particular releases?
I never got it to work until I installed Ubuntu hoary on my laptop. I
guess I could have gotten it to work on other distros, but I didn't
bother to patch, compile and install a kernel myself. So I guess the
ubuntu team has done what's necessary for me in their kernel patches.
-- Rolf Arne Schulze Trans-atlantic weightloss challenge: http://tawlc.net/ Min Weblog: http://rolfas.net/
- Next message: Dave Uhring: "Re: Does Linux provides everything what Windows OS provides?"
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