How can I hibernate on Ubuntu 16.04?

In this post I will show how to Enable Hibernate in Ubuntu.

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OutPut:

First check if hibernate works on your system or not using below Command in Terminal.

sudo pm-hibernate

If it does not work, check your swap size is grater than or equal to your system RAM.
To add Hibernate option to the settings menu, you can create a configuration file.
Open a terminal and run below command.

sudo nano /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla

It will open nano with an empty file. Copy and paste the below lines into the nano window.

[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

Then save the file and restart the system. Then you will find the menu as shown in the above out put.

For more information you can check this link