Enable Hibernation in Ubuntu 12.10

Before enabling hibernation, please try to test whether it works correctly by running pm-hibernate in a terminal. The system will try to hibernate. If you are able to start the system again then you are more or less safe to add an override. To do so, start editing sudo vi /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla Append this to the file 


[Re-enable hibernate by default] Identity=unix-user:* Action=org.freedesktop.upower.hibernate ResultActive=yes 


Save and exit editor. 
Restart the System. 
Hibernate option will appear.