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

Last updated: 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 in 2007 and wishes to share my experiences and some useful tips with Ubuntu beginners and lovers. Please comment to let me know if the tutorial is outdated! And, notify me if you find any typo/grammar/language mistakes. English is not my native language. Contact me via [email protected] Buy me a coffee:

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?