Ubuntu – How to enable hibernation in 16.04

16.04hibernate

I have lost the to me essential hibernate functionality after upgrading ubuntu. This is normal, but unfortunately I could not reenable it this time.

I tried these three previous solutions:

setting 3 entries in /etc/polkit-1/localauthority/50-local.d/com.ubuntu.disable-suspend.pkla,
setting two entries in /etc/pm/sleep.d/20_custom-ehci_hcd, and
enabling two entries in /var/lib/polkit-1/localauthority/10-vendor.d/com.ubuntu.desktop.pkla plus restarting the menu/indicators and rebooting

but no hibernation option appears.

Some additional info:

sudo pm-hibernate outputs nothing and appears to do nothing.
sudo s2disk outputs:

s2disk: Could not open the snapshot device. Reason: Operation not permitted

I guess this is my key clue, but I didn't find any obvious explanations/solutions when googling that – I'm afraid I'm ignorant of the meaning.

There is no change to dmesg output and /var/log/pm-suspend.log does not exist after running pm-hibernate.

The machine is capable of hibernating under ubuntu 15.04 and earlier – the above options worked previously.

(I am aware this is a potential duplicate of this question, but wanted to add more detail.)

Best Answer

You need to disable Secure Boot if you are using UEFI.

With Secure Boot enabled hibernation is disabled for security reasons.

Related Solutions

Ubuntu – How to enable hibernation

If this answer does not work in Ubuntu 13.10, see here for an alternative answer

Hibernation was disabled on 12.04 for machines that are not certified with Ubuntu.

In order to enable hibernation you need to test whether it works correctly by running sudo 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 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

Or in 14.04 and later:

[Re-enable hibernate by default for login1]
  Identity=unix-user:*
  Action=org.freedesktop.login1.hibernate
  ResultActive=yes

[Re-enable hibernate for multiple users by default in logind]
  Identity=unix-user:*
  Action=org.freedesktop.login1.hibernate-multiple-sessions
  ResultActive=yes

Save by pressing Ctrl-O then enter and then exit nano by pressing Ctrl-X.

Restart and hibernation is back!

Or run killall unity-panel-service to just reset the menu.

Some users will then need to run sudo update-grub to get the hibernate option to be available in the power menu. Some users may also have to at least log out then log in to get it to appear in the (upper right) power menu.

Ubuntu – How to enable hibernation on Wubi

Unfortunately, hibernation is not supported for Wubi systems (see this page).

If you want to be able to hibernate your Ubuntu system, you'll have to do a standard installation (alongside, instead of inside, your Windows system) by booting from an Ubuntu CD/DVD or USB flash drive and running the installer.

bcbc has explained this further:

You can't hibernate a Wubi install unless you also have a swap partition. You're using a swap file so increasing the size won't help. There is a way to hibernate with a swap file, but I've never seen anyone get it to work on Wubi.

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