How does the Task scheduler (WINXP) wake up my system from S3? or How to wake my system from OFF or Hybernation state ?

[ruckb]

Hi all,

it's some time ago since my last visit. Lets take a look wheter the forum is still as good as it was ...

I'm buliting a Home Theatere PC. As I do not want to leave it on all the time I tried to wake it from different power safe states.
S1 is no Problem!

Wake up from S3 is working on my notebook with the task scheduler. But how is it working ?
As only the DRAM is powered I would be interested how the task scheduler makes it possible to wake my system from S3. Especially, as I didn't got the BIOS option "wake at a specific time" to work. So it seems, that the Tast scheduler can not use this feature.

And as the care I'm going to use in my system seems to have problems with power safing modes I woudl be even more interested to wake my system from OFF or hybernation state.
One possiblity I see would be the "Wake on modem ring" option in the BIOS. But then I would a need a small device with timer, that rings at the seriell port at the programmed time(s). Does anybody has experience with such a device ?

Or does anybody have another idea to wake up my system when it is off ?

thx

Hermann

 

[Ipno]

Check this out if you want a commercial solution.

You could also write your own program to watch the IR and get a learning remote to do basically whatever you want.

 

[ruckb]

Sorry, I didn't wrote detailed enough about what i wanted to know!

I would expect, that the RTC is having some registers, that can be programmed. If there is the event in the RTC, which signals are activated, and where are this signals evaluated (south / Nothbirdge are not powered up in S3).
So who evaluates the wake up signal, and wake up processor, chipset, powersupply, ...

The same question I would like to have for the wake on Modem / wake on Lan / wake on keyboard features. This features
are able to wake the system from OFF / hybernationstate.

The only power you do have in this cases is the 5V standby power of the PS, and the battery for the RTC/BIOS.
So some devices has to create the same pulse then the on switch is creating wo activate the ATX PS.

So there are a lot of questions, where I have some guess, but no real clue how it is working. If anybody knows in more detail (e.g datasheet for RTC, ATX spec for powersave modes, ...) he will get a lot of thanks if he shares his knowledge!

Hermann