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  • Standby to Hibernate?

    Is there any way to set the PC power option to go to standby after a certain time AND then hibernate after an hour or so after going into standby?

  • #2
    Seems to be, my laptop did that before I turned off hibernation.

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    • #3
      I think you go through the power settings in the control panel, that is if you're using windows.

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      • #4
        Ah, never mind. Once Hibernation is enabled (had to click apply) the time option comes up for it.

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        • #5
          hmmm, well I got it set, but it never goes into hibernation. It just keeps coming in and out of standby, is this a XP problem?

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          • #6
            I would imagine that unless transitioning from standby to hibernate is a feature of the motherboard/bios, it is not possible.

            Once in standby, the processor is halted so there is no way windows can execute code to watch for elapsed time periods and make any kind of transition.

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            • #7
              Originally posted by digitallexus
              I would imagine that unless transitioning from standby to hibernate is a feature of the motherboard/bios, it is not possible.

              Once in standby, the processor is halted so there is no way windows can execute code to watch for elapsed time periods and make any kind of transition.
              I'll probably just use hibernation exclusively, but I also considered the idea of using my PIC power controller chip to handle transitions between standby(s3) and hibernate (s4).

              At predetermined times during the day it would transition into either hibernate or standby based on my likelyhood of using the comptuer. During the night, the PIC will pulse the power button, pulling the computer out of standby. It will then commuicate with a utility running in windows that will kick off the hibernate.

              In the morning, the PIC will power up the machine out of hibernate and then inform the utility to put the computer into standby. During the day, the computer will only draw 150mA when the car is off. Ignition to Play will only take a few seconds. During the night, power consumption is near zero. (The PIC controller will draw negligible amount)

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              • #8
                Originally posted by digitallexus
                I would imagine that unless transitioning from standby to hibernate is a feature of the motherboard/bios, it is not possible.

                Once in standby, the processor is halted so there is no way windows can execute code to watch for elapsed time periods and make any kind of transition.
                from what I read, standby just stops harddrive, monitor and puts the pc in a low power state. There's a Portable option which has standby and hibernate. If you saying that it's bios based that it should not matter cause system is still running, so if i set standby for 30 and hibernate for 1 hr, it should standby when idle and keep track of the time. Problem I see is that when its time for hibernation, the pc comes out of standby, but doesn't go into hibernation.

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                • #9
                  Most systems completely suspend the CPU. Standby (s3) is also known as STR (Suspend to ram). Basically everything is powered down except RAM to maintain state. This drops power consumtion to 150ma or so depending on the amount and type of memory.

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                  • #10
                    I was able to get transition from standby to hibernate to work on my dell precision 340 workstation. Apparently the ACPI/BIOS support the transition.

                    I'll have to try it with my Epia M10000 and see if it works there.

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                    • #11
                      The Bios has to support it I think. Basically they use a resume timer to wake it back up from standby at the set hibernation time to it can hibernate. I tried it on my laptop and it was funny to see it wake up then shut down.

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