I followed the steps in https://help.ubuntu.com/12.04/ubuntu-help/power-hibernate.html

I can hibernate from the command line, but there’s still no entry in the power menu for hibernation.

  • The Question is about a release or feature that has been significantly updated, to the point at which upgrading fixes the issue or answers the question. – Lewis Goddard Feb 20 '19 at 1:36

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