[gentoo-user] Scheduled wakeup from suspend to ram

[gentoo-user] Scheduled wakeup from suspend to ram

[Frank Steinmetzger]

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Hi Group

one of the very last things I still need Win***s for is to wake me up in the 
morning: I set up a task schedule to launch a playlist with Winamp. Do you 
know of any way to let my laptop go on again automatically after I put it to 
sleep in its RAM?

In case it helps: I'm running 32 bit i686, version 2.6.30.

TIA
-- 
Gruß | Greetings | Qapla'
Press any key to continue, or any other key to quit.

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Re: [gentoo-user] Scheduled wakeup from suspend to ram

[Alan McKinnon]

On Sunday 10 January 2010 19:11:52 Frank Steinmetzger wrote:
> Hi Group
> 
> one of the very last things I still need Win***s for is to wake me up in
>  the morning: I set up a task schedule to launch a playlist with Winamp. Do
>  you know of any way to let my laptop go on again automatically after I put
>  it to sleep in its RAM?
> 
> In case it helps: I'm running 32 bit i686, version 2.6.30.
> 
> TIA
> 

Sounds like a classic case of being WAAAAAAAY too complicated. 

Have you considered buying a cheap alarm clock?
Or setting your phone to play a tune for an alarm?

-- 
alan dot mckinnon at gmail dot com

Re: [gentoo-user] Scheduled wakeup from suspend to ram

[Frank Steinmetzger]

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Am Sonntag, 10. Januar 2010 schrieb Alan McKinnon:
> On Sunday 10 January 2010 19:11:52 Frank Steinmetzger wrote:
> > Hi Group
> >
> > one of the very last things I still need Win***s for is to wake me up in
> >  the morning: I set up a task schedule to launch a playlist with Winamp.
> > Do you know of any way to let my laptop go on again automatically after I
> > put it to sleep in its RAM?
> >
> > In case it helps: I'm running 32 bit i686, version 2.6.30.
> >
> > TIA
>
> Sounds like a classic case of being WAAAAAAAY too complicated.
>
> Have you considered buying a cheap alarm clock?
> Or setting your phone to play a tune for an alarm?

The phone serves as alarm clock by blaring out lout sounds that need to be 
pressed away. :o)
-- 
Gruß | Greetings | Qapla'
Concious smokers drink decaf.

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Re: [gentoo-user] Scheduled wakeup from suspend to ram

[Stroller]

On 10 Jan 2010, at 18:45, Alan McKinnon wrote:
> On Sunday 10 January 2010 19:11:52 Frank Steinmetzger wrote:
>> one of the very last things I still need Win***s for is to wake me  
>> up in
>> the morning: I set up a task schedule to launch a playlist with  
>> Winamp. Do
>> you know of any way to let my laptop go on again automatically  
>> after I put
>> it to sleep in its RAM?
>>
>> In case it helps: I'm running 32 bit i686, version 2.6.30.
>
> Sounds like a classic case of being WAAAAAAAY too complicated.
>
> Have you considered buying a cheap alarm clock?
> Or setting your phone to play a tune for an alarm?

This was my reaction, too, but c'mon, Linux's sleep functionality must  
have a rewake feature, mustn't it?

Stroller.

Re: [gentoo-user] Scheduled wakeup from suspend to ram

[Alan McKinnon]

On Sunday 10 January 2010 23:40:57 Stroller wrote:
> On 10 Jan 2010, at 18:45, Alan McKinnon wrote:
> > On Sunday 10 January 2010 19:11:52 Frank Steinmetzger wrote:
> >> one of the very last things I still need Win***s for is to wake me
> >> up in
> >> the morning: I set up a task schedule to launch a playlist with
> >> Winamp. Do
> >> you know of any way to let my laptop go on again automatically
> >> after I put
> >> it to sleep in its RAM?
> >>
> >> In case it helps: I'm running 32 bit i686, version 2.6.30.
> >
> > Sounds like a classic case of being WAAAAAAAY too complicated.
> >
> > Have you considered buying a cheap alarm clock?
> > Or setting your phone to play a tune for an alarm?
> 
> This was my reaction, too, but c'mon, Linux's sleep functionality must
> have a rewake feature, mustn't it?

I dunno. Think about this - in suspend, nothing is working and no user-code is 
running. The only power consumed is what is needed to refresh RAM. That must 
be there otherwise the content goes away if you try and resume.

So what part of the machine is powered to be able to wake it up? PCs don't 
have alarm clocks, the on-board clock can't usually do it, so the only option 
is for some code to be running, polling the time and cause the system to wake 
up. Which is exactly what suspend does not do.

Wake-on-LAN can do it, but that's not what the OP wants.

-- 
alan dot mckinnon at gmail dot com

Re: [gentoo-user] Scheduled wakeup from suspend to ram

[Daniel Pielmeier]

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Frank Steinmetzger schrieb am 10.01.2010 18:11:
> Hi Group
> 
> one of the very last things I still need Win***s for is to wake me up in the 
> morning: I set up a task schedule to launch a playlist with Winamp. Do you 
> know of any way to let my laptop go on again automatically after I put it to 
> sleep in its RAM?
> 
> In case it helps: I'm running 32 bit i686, version 2.6.30.
> 
> TIA

You can use the real time clock to wake up from suspend to ram.

# Set alarm to 0
echo 0 > /sys/class/rtc/rtc0/wakealarm
# Set new alarm time
date '+%s' -d '+5 minutes' > /sys/class/rtc/rtc0/wakealarm
# Suspend to ram
echo mem >/sys/power/state

If you don't have /sys/class/rtc/rtc0/wakealarm you need to enable rtc
support in your kernel.

-- 
Daniel Pielmeier


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Re: [gentoo-user] Scheduled wakeup from suspend to ram

[Renat Golubchyk]

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On Mon, 11 Jan 2010 00:09:48 +0200 Alan McKinnon
<alan.mckinnon@gmail.com> wrote:
> On Sunday 10 January 2010 23:40:57 Stroller wrote:
> > This was my reaction, too, but c'mon, Linux's sleep functionality
> > must have a rewake feature, mustn't it?
> 
> I dunno. Think about this - in suspend, nothing is working and no
> user-code is running. The only power consumed is what is needed to
> refresh RAM. That must be there otherwise the content goes away if
> you try and resume.
> 
> So what part of the machine is powered to be able to wake it up? PCs
> don't have alarm clocks, the on-board clock can't usually do it, so
> the only option is for some code to be running, polling the time and
> cause the system to wake up. Which is exactly what suspend does not
> do.

Windows can do that and BIOS has such settings too. Those are
power management settings like "suspend to RAM after X minutes",
"hibernate after Y minutes". In order to hibernate it has to wake up
first, so there must be some place where a timer is set.

And I have seen it done on Linux. I just never tried it myself.


Cheers,
Renat

-- 
Probleme kann man niemals mit derselben Denkweise loesen,
durch die sie entstanden sind.
                                              (Einstein)

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Re: [gentoo-user] Scheduled wakeup from suspend to ram

[Alan McKinnon]

On Monday 11 January 2010 00:36:57 Renat Golubchyk wrote:
> On Mon, 11 Jan 2010 00:09:48 +0200 Alan McKinnon
> 
> <alan.mckinnon@gmail.com> wrote:
> > On Sunday 10 January 2010 23:40:57 Stroller wrote:
> > > This was my reaction, too, but c'mon, Linux's sleep functionality
> > > must have a rewake feature, mustn't it?
> >
> > I dunno. Think about this - in suspend, nothing is working and no
> > user-code is running. The only power consumed is what is needed to
> > refresh RAM. That must be there otherwise the content goes away if
> > you try and resume.
> >
> > So what part of the machine is powered to be able to wake it up? PCs
> > don't have alarm clocks, the on-board clock can't usually do it, so
> > the only option is for some code to be running, polling the time and
> > cause the system to wake up. Which is exactly what suspend does not
> > do.
> 
> Windows can do that and BIOS has such settings too. Those are
> power management settings like "suspend to RAM after X minutes",
> "hibernate after Y minutes". In order to hibernate it has to wake up
> first, so there must be some place where a timer is set.
> 
> And I have seen it done on Linux. I just never tried it myself.

Interesting. I haven't looked into that stuff in years, I must be way behind 
the times then :-)

-- 
alan dot mckinnon at gmail dot com

Re: [gentoo-user] Scheduled wakeup from suspend to ram

[Stroller]

On 10 Jan 2010, at 22:09, Alan McKinnon wrote:
>> ...
>> This was my reaction, too, but c'mon, Linux's sleep functionality  
>> must
>> have a rewake feature, mustn't it?
>
> I dunno. Think about this - in suspend, nothing is working and no  
> user-code is
> running. The only power consumed is what is needed to refresh RAM.  
> That must
> be there otherwise the content goes away if you try and resume.
>
> So what part of the machine is powered to be able to wake it up? PCs  
> don't
> have alarm clocks, the on-board clock can't usually do it, so the  
> only option
> is for some code to be running, polling the time and cause the  
> system to wake
> up. Which is exactly what suspend does not do.

PCs have a BIOS feature that allows them to be woken at a specific  
time. I think you can use Linux to set that time, then hibernate; I'm  
not sure about sleep. It's certainly common amongst MythTV users to  
set their machines to go into a low-power mode and then wake them in  
time to record a TV show, but I don't know the mechanics.

Other posts may be more informative.

Stroller.

Re: [gentoo-user] Scheduled wakeup from suspend to ram

[Frank Steinmetzger]

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Am Sonntag, 10. Januar 2010 schrieb Daniel Pielmeier:
> Frank Steinmetzger schrieb am 10.01.2010 18:11:
> > Hi Group
> >
> > one of the very last things I still need Win***s for is to wake me up in
> > the morning: I set up a task schedule to launch a playlist with Winamp.
> > Do you know of any way to let my laptop go on again automatically after I
> > put it to sleep in its RAM?
> >
> > In case it helps: I'm running 32 bit i686, version 2.6.30.
> >
> > TIA
>
> You can use the real time clock to wake up from suspend to ram.
>
> # Set alarm to 0
> echo 0 > /sys/class/rtc/rtc0/wakealarm
> # Set new alarm time
> date '+%s' -d '+5 minutes' > /sys/class/rtc/rtc0/wakealarm
> # Suspend to ram
> echo mem >/sys/power/state
>
> If you don't have /sys/class/rtc/rtc0/wakealarm you need to enable rtc
> support in your kernel.

Thanks for the hint, that sounds promising. However, I didn’t 
have /sys/classes/rtc and since I didn’t know what I need for my ICH-7 
chipset, I compiled everything I could find under Device Drivers/RTC. Then I 
loaded all those modules, but apart from an empty directory /sys/classes/rtc, 
the only reaction at all that I got in my syslog was:

kernel: rtc_cmos: probe of 00:07 failed with error -16

:(
Well, I’ll dig into it further...
-- 
Gruß | Greetings | Qapla'
"I decided to go on a strict diet. I cut out alcohol, all fats
and sugar. In two weeks I lost 14 days." - Tim Maia

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