Menu for hibernate does not work, pm-hibernate does

Question

After upgrade to 15.10 I have been unable to activate hibernation from the start/stop menu. Doing so the following error appear in dmesg:

PM: Swap header not found!

I have checked again that my:

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

file contains what is being advised in this article.
At the same time using sudo pm-hibernate from the terminal works flawlessly.

Unfortunately No. What I was able to find out is that the menu options is calling systemd while pm-hibernate is using uswsusp. However I was unable to make systemd work with uswsusp so I gave up and just call it from command line. — Yordan Pavlov, Mar 05 '16 at 17:34
Do one thing: remove those lines from the mentioned file above, restart your system, and add them again and again restart. see if it can make any difference — Mostafa Ahangarha, Mar 06 '16 at 07:27
That somehow fixed it! Now invoking hibernate from the menu does work flawlessly! Please add this as a response so I can approve it. — Yordan Pavlov, Mar 06 '16 at 11:24

score 1 · Accepted Answer · answered Mar 06 '16 at 11:56

Since you say you can use pm-hibernate without any problem, it means there is no issue in your hibernate setting. Therefore, the problem should be in the settings of menu button. Again, you have mentioned that you are following the same setting which was prescribed here.

As per my understanding, and regarding the fact that you have been facing with this right after upgrading to Ubuntu 15.10, I think your system needs a new configuration for the button. Go through these steps:

Remove the content of /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla and restart you system. Now any configuration for the hibernate button should be removed from the system.

After booting up, open the file again and paste those few lines mentioned in the link into the file and save. Restart your system again.

If everything goes properly, the button should be configured for Ubuntu 15.10

if you see any +50 sign on left side, please click on it as well — Mostafa Ahangarha, Mar 07 '16 at 16:30
Unfortunately I see only this notification "This question has an open bounty worth +50 reputation from Mostafa Ahangarha ending in 4 days. " but no +50 sign to reward the points. — Yordan Pavlov, Mar 08 '16 at 16:21
it is fine. most probably it is not active because I myself gave it. Enjoy your Ubuntu — Mostafa Ahangarha, Mar 09 '16 at 15:57

Menu for hibernate does not work, pm-hibernate does

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