How to Install Light Locker via PPA in Ubuntu 13.10, 13.04

August 30, 2013

Light Locker is a simple session-locker for Lightdm forked from gnome-screensaver that aims to have simple, sane, secure defaults and be well integrated with the desktop while not carrying any desktop-specific dependencies.

With it, the lock screen will look identical to the LightDM greeter – the Unity default login screen.

LightDM locker


To use light-locker with systemd, you need at least lightdm 1.7.0. light-locker doesn’t work with lightdm version 1.7.5-1.7.9

I’ve tested in Ubuntu 13.04 with default lightdm 1.6.0. The light locker works when my laptop wakes up from suspend. But the Lock/Switch Account option in shutdown menu doesn’t work! Use it at your own risk!

Install LightDM Locker:

The Stable PPA has been created for Ubuntu 13.10 Saucy and Ubuntu 13.04 Raring.

Before getting started installing it, press Ctrl+Alt+T on your keyboard to open terminal. When it opens, run command to remove the gnome-screensaver:

sudo apt-get remove gnome-screensaver

The you can add the ppa via command:

sudo add-apt-repository ppa:light-locker/release

Finally install LightDM locker. Log out and back in to take effect.

sudo apt-get update; sudo apt-get install light-locker

I'm a freelance blogger who started using Ubuntu 5+ years ago and wishes to share my experiences and some useful tips with Ubuntu beginners and lovers. Please notify me if you find any typo/grammar/language mistakes. English is not my native language. Contact me on Google Plus or email to

4 responses to How to Install Light Locker via PPA in Ubuntu 13.10, 13.04

  1. Hi. Good article. Also, that’s a cool wallpaper, where did you get it?