Ubuntu – Won’t come back from suspend 16.04 LTS

16.04hibernatelenovosuspend

There used to be a workaround with enabling suspending and hibernation, which worked for me at 14.04 LTS, but having cleanly installed 16.04 LTS I lost that, and now my computer won't come back from suspend.

I tried the tutorial listed here: http://ubuntuhandbook.org/index.php/2014/04/enable-hibernate-ubuntu-14-04/ to enable hibernation but running

sudo pm-hibernate

Leaves me with black screen and processor running, I cannot restore the system, I can only manually shut it down and run again.

Yet my SWAP is bigger than my RAM (8.5 GB).

So I cannot hibernate nor suspend (the latter I can, but the computer doesn't wake up until restarted).

Please help?

Using Lenovo z50-71, i5 laptop with ATI /Intel hybrid graphics.

Best Answer

I had similar issue with not waking up after suspending, leaving me with black screen and processor running. There seems to be a bug in linux kernel that Ubuntu 16.04LTS is using. So upgrading the kernel to 4.4.8 solves the problem.

You can download the kernel for your system from here and set up.

Hopefully that solves your issue.

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I too hate having to pass a URL so I will copy and paste the information and attach the web page to the bottom. I do not see this in your link.

While reading this, I noticed that hibernation may not work if you formatted with btrfs file system? So, how is hibernation permanently enabled in Ubuntu 16.04?

To make the Ubuntu hibernation process permanent, you need to create a new file using a text editor on the command line:

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

The system requires root privileges to enable the hibernation option, hence, the command sudo should be added. You can use other text editors like vi, gedit, emacs, etc.

Now, copy and paste the following text to a file (use the mouse; keyboard shortcuts won’t work):

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

[Re-enable hibernate by default in logind]
Identity=unix-user:*
Action=org.freedesktop.login1.hibernate;org.freedesktop.login1.handle-hibernate-key;org.freedesktop.login1;org.freedesktop.login1.hibernate-multiple-sessions;org.freedesktop.login1.hibernate-ignore-inhibit
ResultActive=yes

Press CTRL+O to save, and CTRL+X to exit the nano editor.

Now, logout of your system and then login again. You will now see a hibernate option, along with the Shut Down and Suspend options.

The link for your convenience is: https://fossbytes.com/enable-disable-hibernate-option-ubuntu-power-menu/

Best Answer

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