Enable hiberate in Arch Linux usind kernel 4+, grub2 and a swapfile

enable-hibernate-arch-linux.md

This guide is based on the hibernate article from the Arch wiki.

• edit /etc/default/grub and add resume as well as resume_offset kernel parameters
  • resume=UUID=abcd-efgh contains the UUID of the partition on which the swapfile resides. In most cases the swapfile resides in root, to identify the root parition's UUID run blkid or lsblk -O.
  • resume_offset=1234 is the offset of the swapfile from the partition start. The offset is the first entry in the physical_offset column of the output of filefrag -v /swapfile.
  • update grub: grub-mkconfig -o /boot/grub/grub.cfg
  • example: GRUB_CMDLINE_LINUX_DEFAULT="resume=UUID=75972c96-f909-4419-aba4-80c1b74bd605 resume_offset=1492992"
• add the resume module hook to /etc/mkinitcpio.conf:
  • HOOKS="base udev resume autodetect ...
  • rebuild the initramfs mkinitcpio -p linux
• check if everything works: systemctl hibernate

how to enable it with a swap partition?

The linked Arch Wiki article is quite clear about that, you just need to pass resume=UUID=abcd-efgh as kernel parameter where abcd-efgh is the UUID of your swap partition. Of course, you can also specify the partition by LABEL etc.

very nice! thx!!

best guide on hibernation. only thing i had to change was run mkinitcpio as root

Thanks for this.