Re: ACPI wake up event (alarm)

["Dino Klein" <zagzag-lists-zY4eFNvK5D9If6P1QZMOBw@public.gmane.org>]

You can check the specs from Intel as to whether the 845 supports S3 or S4. If it does, then the motherboard mfg. must have slacked; also check for BIOS updates for your motherboard.

> -----Original Message-----
> From: Jarek Zuk [mailto:j.zuk-QYlicCNJNu5TzFIbWlesCw@public.gmane.org]
> Sent: Thursday, April 15, 2004 07:03 PM
> To: 'Dino Klein'
> Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> Subject: Re: [ACPI] ACPI wake up event (alarm)
> 
> 
> I have Intel 845 . S2 S3 S4  dont work , no reaction at all. 
> Only S5 does something.
> Yes my script unmoutns the filesystems before going to S5, to avoid fsck on boot .
> I have noticed also that when i invoke alarm event before  going to S5 it also works, but 
> not always ( i tried scheduling it in rc.local , but this workaroud doesnt help) .
> Any ideas why S3 or S4 doesnt work for me ?
> 
> Jarek Zuk 
> 
> 
> Dnia czw 15. kwietnia 2004 18:11, napisałeś:
> > According to the specs the RTC must be able to wakeup a system from S1, S2,
> > or S3, S4 is optional, and S5 is not even considered a sleep state, so the
> > RTC is not required to support S5. (check ACPI 2.0c, section 4.7.2.4, and
> > table 5-9) Even still, the chipset might support it, as my Via 686B which
> > treats S4 & S5 the same way.
> >
> > This is just a guess, but perhaps the handling of the wakeup bits in the
> > linux ACPI is inconsistent, so when you transition to S1, it does allow for
> > a wakeup from the RTC, and then doesn't clear it before entering S5 (as
> > specified in the footnote). However, when you go directly to S5, the RTC is
> > not set as wakup source, and that's why it doesn't work. If S3 or S4 work
> > for you, then perhaps you should use them, thus avoiding this whole issue.
> >
> > One sidenote - are you unmounting the filesystems before putting the
> > machine to S5? after all, that's the equivalent of pressing the power
> > button.
> >
> > > -----Original Message-----
> > > From: Jarek Zuk [mailto:j.zuk-QYlicCNJNu5TzFIbWlesCw@public.gmane.org]
> > > Sent: Thursday, April 15, 2004 12:48 PM
> > > To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> > > Subject: [ACPI] ACPI wake up event (alarm)
> > >
> > >
> > > I have a question about ACPI alarm (/proc/acpi/alarm).
> > >
> > > I have a cron job  that runs early in the morning, so I need my machine
> > > to be up at that time. I dont want to have it up all night, so I want to
> > > use the alarm feature.
> > >
> > > I use kernel 2.4.25 with your corresponding patch. I read everything on
> > > acpi page about /proc/acpi/sleep and /proc/acpi/alarm .
> > > What I want to do is :
> > > echo 2004-04-15 14:40:00 > /proc/acpi/alarm
> > > echo 5 > /proc/acpi/sleep
> > >
> > > and get the computer up when the specified time comes.
> > >
> > > My problem is that it works  sometimes, well what I noticed is that it
> > > works providing that before I put the system into sleep mode (5)  I do :
> > > echo 1 > /proc/acpi/sleep
> > > (the power button starts blinking)
> > > press the button  ( system is awake )
> > >
> > > When I  dont do this  "echo 1 > /proc/acpi/sleep" thing , the computer
> > > doesn't  turn on whet time comes. :(
> > >
> > > Looks like putting system into a sleep mode 1 changes something that
> > > allows later to do proper wakeup.
> > >
> > > Does the system have to be in sleep mode to be woken up by alarm event ?
> > > or it should work also after shutdown ?
> > >
> > > I want to have this procedure in a script and presing the power button 
> > > is kinda difficult from a script.
> > >
> > > Any pointers are welcome.
> > > Jarek Zuk
> > >
> > >
> > >
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> 
> 




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