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Many articles seem to have been dedicated to installing hiberate under Ubuntu 18.04 x64 / Kernel 4.20. But, I still cannot get my system loading the swapfile after hibernation. This is what I did:

  1. Install hibernate GNOME extension

  2. Create new swap file of 16GB

sudo swapon --show

NAME TYPE SIZE USED PRIO

/swapfile file 16G 0B -2

  1. Update etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=/dev/sda1 resume_offset=15140864"

  1. Update to kernel 4.20

After these actions the systems does go into hibernation but, never loads the old system state.

Is there anything I am overlooking here?

  • Are swap files supported for hibernation now? At least a while ago, you could only hibernate to swap partitions, but swap files were not supported. Not sure if that has changed yet. – Byte Commander Dec 30 '18 at 16:20
  • Check /etc/initramfs-tools/conf.d/resume is configured, then do sudo update-initramfs -c. Why the offset in your GRUB line? Report back to @heynnema – heynnema Dec 31 '18 at 14:57
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I had the same situation here. I've just tried with UUID and it worked like a charm:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=UUID=d2175d30-aee3-418b-8c3f-d4ae61d13b3f resume_offset=2367488"

Hope it helps, Br, Martin

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