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Re: Doesn't Hibernate use NO power?

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On 03/01/2025 20:29, Frank Slootweg wrote:
> micky <NONONOmisc07@fmguy.com> wrote:
>> I read in an answers.microsoft.com page that Hibernate uses less power
>> than Sleep.   And another page said something similar.
>>
>> Doesn't Hibernate use NO power?   After it finishes copying the RAM to
>> the HDD, isn't it just like OFF?  In what way could it use power?
> 
>    You don't say for which type of computer, but 'knowing' you, you
> probably are asking about laptops, so I will respond in that context.
> 
>    As Shinji Ikari said, when in hibernation, the laptop still uses a
> little power, because for example it responds to the power button, which
> is a soft(ware) button, not an actaully switch. So the electronics of
> the laptop is still ppartly on and hence uses some power. And, as
> mentioned, USB ports might be kept alive, which also draws power.
> 
>    And, for Windows 10 (and 11), the laptop can have 'Modern Standby'
> [1], which is more awake than 'old' 'Sleep'. And if the laptop has
> 'Modern Standby', it can also have 'Adaptive Hibernate' [2]. When in
> Adaptive Hibernate, the system can still be woken up a bit (read the
> reference) and can/will use some power, by default not more than 5% per
> cycle.
> 
>    So yes, in hibernation, the laptop can and probably will use some
> power.
> 
>    OTOH, in hibernation, the laptop can survive without power, which is
> proven if you remove the battery (and of course not have the laptop on
> AC power), assuming you can remove the battery, which is often no longer
> the case. If, after doing that, you re-insert the battery or/and connect
> AC power, you can wake the laptop by pressing the power button and the
> session will continue, exactly as you  left it.
> 
>> As an aside, why does one have to enable Hibernate?  The other options,
>> including sleep, restart are implemented by default. Is Hibernate to
>> dangerous for a newbie to handle?
> 
>    There's no reason and no, it's not dangerous. Most knowledgeable
> laptop users use it all the time (as has been recently discussed in
> these groups (10 or/and 11)), because it's so much more convenient than
> Shutdown, reboot, login and restart/initialize all your stuff to where
> it was and uses much less battery power than the only other alternative,
> which is Sleep and re-awake.
> 
>    Hope this helps.
> 
> [1] 'What is Modern Standby'
> <https://learn.microsoft.com/en-us/windows-hardware/design/device-experiences/modern-standby>
> 
> [2] 'Adaptive Hibernate Overview'
> <https://learn.microsoft.com/en-us/windows-hardware/customize/power-settings/adaptive-hibernate>

I have an old Win 10 Lenovo laptop with no battery - removed when it 
became swollen. The laptop regularly hibernates while totally 
disconnected from the mains and happily wakes up even after several weeks.

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Thread

Doesn't Hibernate use NO power?  micky <NONONOmisc07@fmguy.com> - 2025-01-03 13:26 -0500
  Re: Doesn't Hibernate use NO power? T <T@invalid.invalid> - 2025-01-03 11:30 -0800
  Re: Doesn't Hibernate use NO power? Shinji Ikari <shinji@gmx.net> - 2025-01-03 20:37 +0100
  Re: Doesn't Hibernate use NO power? Paul <nospam@needed.invalid> - 2025-01-03 15:08 -0500
    Re: Doesn't Hibernate use NO power? Hank Rogers <Hank@nospam.invalid> - 2025-01-03 18:12 -0600
  Re: Doesn't Hibernate use NO power? Frank Slootweg <this@ddress.is.invalid> - 2025-01-03 20:29 +0000
    Re: Doesn't Hibernate use NO power? MikeS <MikeS@fred.com> - 2025-01-04 10:28 +0000
      Re: Doesn't Hibernate use NO power? Paul <nospam@needed.invalid> - 2025-01-04 07:15 -0500
        Re: Doesn't Hibernate use NO power? Frank Slootweg <this@ddress.is.invalid> - 2025-01-04 16:21 +0000
      Re: Doesn't Hibernate use NO power? Frank Slootweg <this@ddress.is.invalid> - 2025-01-04 16:28 +0000
        Re: Doesn't Hibernate use NO power? MikeS <MikeS@fred.com> - 2025-01-04 18:40 +0000
    Re: Doesn't Hibernate use NO power? Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> - 2025-01-16 12:36 +0200
      Re: Doesn't Hibernate use NO power? Frank Slootweg <this@ddress.is.invalid> - 2025-01-16 11:23 +0000
        Re: Doesn't Hibernate use NO power? Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> - 2025-01-23 11:32 +0200
  Re: Doesn't Hibernate use NO power? "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2025-01-10 12:21 +0800
    Re: Doesn't Hibernate use NO power? "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2025-01-10 12:22 +0800
      Re: Doesn't Hibernate use NO power? Frank Slootweg <this@ddress.is.invalid> - 2025-01-10 16:41 +0000

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