Ubuntu – Blank screen after suspend/hibernate on 14.04


I did a fresh install of Ubuntu 14.04.
Everything works great except after hibernate/suspend I am getting a black screen.
I can use Alt+Ctr+F1 then Ctrl+Alt+Del to restart and the screen comes back fine.

I am using the open-source X.org X-server drivers.

My laptop is hp pavilion g6, APU A8-3520M with Radeon HD 6620G

What can I do to make screen come back after suspend/hibernation?
I've checked some old thread from 2010 where people add a little piece of code to somewhere in the system to force the screen come back or something.

Best Answer

Killing the process light-locker (discovered by using xwininfo) helped us temporarily, then uninstalling light-locker with dpkg --purge light-locker light-locker-settings fixed it more permanently.

We are using Gnome 3, so this might not be a solution for everybody.

(In general, there's probably a process displaying a black screen that you need to kill; try to find it!)

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