Re: [ACPI-sppt] Re: lid question & wake up

On Sat, Aug 02, 2003 at 04:29:09PM -0300, Derek Broughton wrote:
> Valentine Kouznetsov wrote:
> >Hi, "wondering about echo option" I mean what should I do to wake up 
> >after invoking echo 1 > /proc/acpi/sleep.
> 
> Well, there is no echo option you could possibly use to turn it back on
> - the system has to wake up before you can do something like that, so it
> has to be hardware controlled.
> 
> >cat /proc/acpi/info version:                 20030619 states:
> >S0 S1 S3 S4 (Bios) S5
> >
> >BTW, what means (Bios) in states? Does it mean that S4 controlled by
> >Bios? Thanks again, Valentine.
> 
> hmmm.  I thought it used to say "S0 S1 S3 S4 S4Bios S5" in this case.  I 
> believe it means that you can use
> 	echo 4b>/proc/acpi/sleep
> to have the BIOS do the suspend.  It has advantages and disadvantages 
> over letting swsusp do it.  swsusp always works - not all machines 
> support S4bios.  S4bios is typically faster.  S4bios needs a dedicated 
> swap partition - and your manufacturer rarely tells you how to create it 
> on a linux machine.

If you see S4bios, then such partition may already exist.  Some
bios will tell you (at suspend time) that you have to create
that partition, though.  In any case, it should be safe to try (after
backup, of course ;)

-- 
Ducrot Bruno

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.


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