Hibernate not working in 18.04

Solution 1:

This instruction worked for my Ubuntu 18.04 installation.

1. sudo apt install hibernate It will install hibernate and other dependencies which are needed to hibernate

2. grep swap /etc/fstab (find UUID)

3. sudoedit /etc/default/grub At the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" add UUID of swap.

   The line looks like this

   GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=UUID=<UUID of swap>"

   You can choose

   `quiet splash` will hide the boot screen output
   
   `splash` will display the boot screen output
   

4. sudo update-grub

5. Restart, and after restart sudo systemctl hibernate. If everything works ok add menu entry's.

6. sudo gedit /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla now paste this:

[Re-enable hibernate by default in upower] Identity=unix-user:* Action=org.freedesktop.upower.hibernate ResultActive=yes [Re-enable hibernate by default in logind] Identity=unix-user:* Action=org.freedesktop.login1.hibernate;org.freedesktop.login1.handle-hibernate-key;org.freedesktop.login1;org.freedesktop.login1.hibernate-multiple-sessions;org.freedesktop.login1.hibernate-ignore-inhibit ResultActive=yes

7. Restart the computer
8. Install https://extensions.gnome.org/extension/755/hibernate-status-button/