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Kaigo
Asked: 2020-05-20 09:33:37 +0800 CST

Laptop freezing when running out of battery on ubuntu 20.04

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When running out of battery and trying to bring the system back up again, I'm faced with a black screen and fans on full.

I've configured hibernate using guide which sets the swap uuid in the grub file. 

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=UUID=14cee2ec-9d37-4ac0-b594-eae0e55814aa"

and sets the swap uuid again in /etc/initramfs-tools/conf.d/resume

My swap drive is the same size as my RAM.

However, something is still causing crashes during hibernate only when running out of battery - otherwise hibernate works fine.

power-management hibernate battery

1 Answers

  1. Best Answer

    in /etc/UPower/UPower.conf

    Edit the line

    CriticalPowerAction=HybridSleep

    to

    CriticalPowerAction=Hibernate
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