Sleep Reason: Hibernate from Sleep - Fixed Timeout - Set Never?

protivakid · 26 May 2017

I recently did a fresh install of Win 10 Creative Update. I have Hibernate on my pc set to Never. My computer is set to Sleep after 20 minutes which works fine. After it goes to sleep a minute later I can hit a key and it will return from sleep. The problem is after a long period of time I come back and my computer acts like it's going through a cold boot / resume from Hibernate showing my BIOS screen and then starting windows 10 (doesn't say resuming).

In my System event log I see the PC go to sleep with:

The system is entering sleep.Sleep Reason: System Idle

Then anywhere between 5 - 40 minutes later (according to the event logs) I see this:

The system is entering sleep.Sleep Reason: Hibernate from Sleep - Fixed Timeout

Any idea what is going on or what I can check?

Bree · 26 May 2017

protivakid said:

...what I can check?

Go to Control Panel > Power options. Click on 'Change plan settings' then on the next screen click 'Change advanced power settings'. You'll find a 'Hibernate after' setting under 'Sleep'.

WOT · 26 May 2017

Bree said:

Go to Control Panel > Power options. Click on 'Change plan settings' then on the next screen click 'Change advanced power settings'. You'll find a 'Hibernate after' setting under 'Sleep'.

In addition to the suggestion by @Bree you can also just disable hibernate entirely if you don't use it:
Enable or Disable Hibernate in Windows 10

However, be forewarned that you will lose "fast startup" if the hibernation file is removed.

The sleep function would still work because it doesn't require the hibernation file.

And, you would also recover a few GBs of hard drive space as well.

The nice thing is you can always change it back if you wish.

Good luck,

WOT

Bree · 26 May 2017

WOT said:

However, be forewarned that you will lose "fast startup" if the hibernation file is removed.

If you want fast startup without enabling hibernation you can have it. @WOT's tutorial link includes this....

Tip
Fast startup requires that hibernate be enabled. If you only want to use fast startup and don't plan on using hibernate, then you can specify the hiberfile type as reduced to significantly reduce the size of the hiberfile (C:\hiberfil.sys) to about half of its full size.

WOT · 26 May 2017

@Bree: Have you actually tested to ensure that hibernate will not work with a reduced size?

I don't think the specific size parameter works anymore so I (personally) can't be certain that hibernate would still be disabled at the default reduced size for everyone:

Sleep Reason: Hibernate from Sleep - Fixed Timeout - Set Never?-untitled-2.jpg

Especially if the installation has a large amount of RAM installed.

However, I only have 4GBs of RAM so it does work for me.

Bree · 26 May 2017

WOT said:

@Bree: Have you actually tested to ensure that hibernate will not work with a reduced size?

No, but then I prefer hibernate to sleep and I have fast startup turned off. I am going by Brink's tutorial which says....

Note
Hiberfile type:

Full = Supports being able to enable hibernate and turn on fast startup (hiberboot). The hiberfile (C:\hiberfil.sys) will be 40% of physical RAM installed on your computer. Hibernate is available to be added to the power menu.

Reduced = Only supports being able to turn on fast startup (hiberboot) without hibernate. The hiberfile (C:\hiberfil.sys) will be 20% of physical RAM installed on your computer. Removes hibernate from the power menu.

Specify Hiberfile Type as Full or Reduced in Windows 10

WOT · 26 May 2017

@Bree: As he is usually spot-on, I can't disagree.

I also don't have a rig with 64 GBs of RAM installed so I can't test anyway.