How to avoid hibernating when battery is low [LWN.net]

How to avoid hibernating when battery is low

Posted Sep 20, 2018 10:20 UTC (Thu) by ededu (guest, #64107)
Parent article: Fedora reawakens the hibernation debate

I am a happy user using exclusively suspend-to-RAM, and use it very often (going to lunch, moving in a different office, during night). The problem I have is that, even if in suspend state, my Lenovo system with debian wakes up when the battery is exactly 7% and tries hibernation, which I have never configured (and do not want it either) and a few minutes later it runs out of energy. May I ask how can I remove this "functionality" so that it never wakes up? I looked at numerous files and Web pages without finding the answer.

to post comments

How to avoid hibernating when battery is low

Posted Sep 21, 2018 0:48 UTC (Fri) by zlynx (guest, #2285) [Link]

If it wakes up at a certain battery level, it is almost certainly the UEFI / BIOS doing it. There is probably a setting in there somewhere. My Dell XPS has 20 pages of UEFI settings for various things.

If you don't like hibernate then I'd recommend that you set it to forcefully power down. Because you don't want your battery actually going to 0%. It is very bad for a lithium ion battery to fully discharge.