Puting system to 'sleep'

[Matthew Garrett]

On Mon, 2005-01-10 at 15:18 +0100, Carsten wrote:

> Obviously you're right. I confused the options CONFIG_PM and 
> CONFIG_PM_DISK. Will swsusp be shipped with Hoary even if it won't be 
> part of the default kernel yet at that time?

Mm? swsusp is currently part of the default kernel and is enabled by
default in Hoary.

> >>echo -n "standby" > /sys/power/state
> > 
> > 
> > Uh, that's not PMDisk. Depending on whether you're on an APM or an ACPI
> > system, that'll trigger a fairly light suspend to RAM.
> 
> So this command just uses the possibilities ACPI/APM include themselves?

Yup.

> > It's likely that Hoary will support suspend to RAM on most machines, but
> > it may not be enabled by default.
> 
> In my experience suspend to disk worked on more machines than suspend to 
> RAM. Maybe that was just my personal experience, but technically I'd 
> also imagine it a much easier task to write a RAM image to disk and load 
> it back from there to resume than keeping everything in RAM while 
> switching off all other devices. But as not at all being involved in 
> that kind of development this is a hardly-facts-based and abstract idea 
> of mine. ;-)

Yes, suspend to disk works on more systems at the moment. However, a
large number of the suspend to RAM bugs have been worked out recently.
-- 
Matthew Garrett | mjg59 at srcf.ucam.org