So I recently installed 13.04 and chose full disk encryption (I didn't bother to encrypt home too - seemed pointless), and I'm wanting to encrypt my swap drive, and also enable hibernate so I can be as secure as possible. I haven't been able to find much information that pertains to my exact set of circumstances, and although I found this webpage (https://help.ubuntu.com/community/EnableHibernateWithEncryptedSwap), it says it has only been tested with 12.04.
In any case, I went ahead and tried that and once I got to step 6 under "How to setup hibernation", I got an error stating that:
swapon: /dev/mapper/ubuntu--vg-swap_1: read swap header failed: Invalid argument
I don't know if I've FUBARED it or if a few commands can fix it, it doesn't really matter because I did all of this on a fresh install and there is no files I'm worried about losing.
Can anyone help me get this working?