Linux power management
Power adapter status
sensors | grep -iA5 bat
Suspend and Hibernate
Arch suspend and hibernate
Blank screen after suspend
Hibernate on ubuntu
Using a swapfile on encrypted rootfs
Problem: On a fresh ubuntu 20.04 install, the swap partition is too small (~1Gb) for a hibernate image. So we need to remove it and use a swapfile.
- Hibernate and resume from swap file in Ubuntu 20.04 using full disk encryption
- Askubuntu: Hibernate and resume from a swap file
See ~/disk/swap.md on how to properly size swap.
sudo findmnt -no SOURCE,UUID -T /var/lib/swapfile
sudo apt -y install uswsusp
sudo dpkg-reconfigure -pmedium uswsusp
# Answer "Yes" to continue without swap space
# Select "/dev/disk/by-uuid/20562a02-cfa6-42e0-bb9f-5e936ea763d0" replace the UUID with the result from the previous findmnt command
# Encrypt: "No"
...
Handle lid close behaviour
http://ubuntuhandbook.org/index.php/2020/05/lid-close-behavior-ubuntu-20-04/