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HP Recommended
HP EliteBook 840 G6
Microsoft Windows 10 (64-bit)

I have my laptop's "Critical battery action" set to "Hibernate" when running on the battery. The Low and Critical battery levels are default (10% and 5% respectively). The "Low battery action" is "Do nothing".

 

My battery was running low and I was trying to work right up until the point of hibernation. However, the computer simply shut down rather than hibernating. It was very sudden (no shut down message).

 

How can I ensure that the laptop hibernates instead of shutting down?

 

What I tried:

  • I found this SuperUser post, but I know that Hibernation is enabled as I do it manually.

  • The laptop is an HP EliteBook 840 G6 with 12GB RAM and 475GB SDD, of which 238GB is free. I suspect that this is enough disk space for hibernation.

  • I tried a full charge from dead to 100%, full depletion to dead, and a full charge to 100%, but the laptop still shuts down when the charge runs out instead of hibernating

  • I charged it up to 100% again and boosted the Critical battery level from 5% to 10%. The charge indicator is supposed to be properly calibrated after so many full chargings and discharges. Together with the additional 5% headroom, I expected this to leave enough margin to hibernate when the charge runs out. It did not. The laptop still shuts down instead of hibernating when the charge runs out.

  • I charged it up to 100% again and set Critical battery level to 20% to see if the additional margin allows for hibernation. Since Low battery level had to be higher than Critical, I had to set the former to 25%. The discharging battery blew past the Critical level of 20%, reaching 16% at the time of updating this bullet.

  • The only BIOS information I could find about power management do not include the actions when Critical batter level is reached (image below)

Advanced BIOS optionsAdvanced BIOS options

  • My Googling of the "Power Control" checkbox above shows that it is for IPM+.  I've enabled it, but I don't expect any change because I cannot find any evidence of IPM+ on my laptop.

Essentially, I can manually hibernate and I can set the Critical battery action to hibernate, but the latter is simply ignored when the charge indicator reaches the Critical battery level.

1 ACCEPTED SOLUTION

Accepted Solutions
HP Recommended

Much as I hate to mess with the BIOS, I ran out of options, so I enabled the "Power Control" checkbox in the BIOS's "Advanced" menu (as shown in my posted question). That allowed the hibernation to be performed at the Critical battery level.

View solution in original post

1 REPLY 1
HP Recommended

Much as I hate to mess with the BIOS, I ran out of options, so I enabled the "Power Control" checkbox in the BIOS's "Advanced" menu (as shown in my posted question). That allowed the hibernation to be performed at the Critical battery level.

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