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Windows 7: Netbook Not Hibernating After Sleep


13 Aug 2011   #1

Windows 7 Ultimate x64
 
 
Netbook Not Hibernating After Sleep

I reinstalled the same version of Windows 7 (7601 x64) on my netbook that I previously had on it. Prior to this, when I left the netbook plugged in overnight, it would go to sleep mode after 10 minutes, then sometime during the night always power off completely (hibernate). This would allow me to take it with 100% battery and power it up later when needed. Now after the reinstall, it goes to sleep mode, but always remains in sleep mode and will never hibernate. I've scoured the power options, and confirmed that hibernate is enabled with powercfg. Is this just a simple option I'm over looking? The only difference is that I installed SP1 this time!


My System SpecsSystem Spec
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14 Aug 2011   #2

Windows 7 Profession 64-bit
 
 

I don't see it being a SP1 problem.

According to here,
Quote:
Will sleep eventually drain my laptop battery?

Sleep requires an extremely small amount of power. If your laptop battery charge gets critically low while the computer is asleep, Windows automatically puts the laptop into hibernation mode.
My understanding is after about 3 hours of inactivity, it should hibernate automatically. So if yours is not doing that, then I suspect a setting, or you have an external device connected that is keeping it awake.

Do make sure you do not have hybrid sleep mode enabled - that's for desktops only.
My System SpecsSystem Spec
15 Aug 2011   #3

Windows 7 Ultimate x64
 
 

Thanks for the help!

I figured it out, I just forgot to update the thread. Hybrid sleep is the option I adjusted. Now after 15 minutes it sleeps, and 15 minutes later it inebriates to save even more power. How is hybrid sleep mode designed just for desktops? Its seems to revolve around battery powered computers.
My System SpecsSystem Spec
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15 Aug 2011   #4

Windows 7 Profession 64-bit
 
 

Hybrid sleep uses more power than hibernate, so hybrid WILL run down the battery on a notebook.

The PC is plugged in all the time. PC power supplies are required by the ATX Form Factor Standard to supply +5Vsb standby voltages to several points on the motherboard, including the RAM, even when the computer is shutdown. Because of that standby power (not found in notebooks), hybrid is more suited to desktop PCs.
My System SpecsSystem Spec
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 Netbook Not Hibernating After Sleep




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