Hibernate Option not available in Ubuntu 12.04

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http://askubuntu.com – My Ubuntu 12.04 is missing Hibernate option so after searching a little on Google I came to know that this can solve my problem sudo nano /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla Fill it with this [Re-enable hibernate by default] Identity=unix-user:* Action=org.freedesktop.upower.hibernate ResultActive=yes Here is the link : How to enable hibernation in 12.04? After doing this I restarted my system. when the system booted it hanged ike anything No mouse movement no terminal no nothing. I waited for more than 1 hour Hibernate option appeared but i was not (HowTos)