Re: Hibernation considerations

[Nigel Cunningham <nigel@nigel.suspend2.net>]

Hi.

On Monday 16 July 2007 09:15:47 Alan Stern wrote:
> On Sun, 15 Jul 2007 david@lang.hm wrote:
> 
> > >> for a pure hibernate mode, you will be powering off the box after 
saving
> > >> the suspend image. why are there any special ACPI modes involved?
> > >
> > > Because, for example, on my machine the status of power supply (present
> > > vs not present) is not updated correctly after the restore if ACPI 
callbacks
> > > aren't used during the hibernation.  That's just experience and it's in 
line
> > > with the ACPI spec.
> > 
> > so if a machine is actually powered off the /dev/suspend process won't 
> > work?
> > 
> > remember that the system may run a different OS between the hibernate and 
> > the resume, makeing any assumptions about what state the hardware is in 
> > when you start the resume is a problem.
> 
> As I understand it, running a different OS between the hibernate and 
> the resume would violate the ACPI spec.

Well then, I know one or two people who would argue that the ACPI spec is 
faulty. :\

Regards,

Nigel
-- 
Nigel Cunningham
Christian Reformed Church of Cobden
103 Curdie Street, Cobden 3266, Victoria, Australia
Ph. +61 3 5595 1185 / +61 417 100 574
Communal Worship: 11 am Sunday.

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