We have recently seen how to change the background image of your logon screen manually, which seems difficult for some Ubuntu users. Today, I bring to you an easy application called Simple LightDM Manager that allows via a GUI to change the Ubuntu 11.10 background image of the login screen as well as the logo displayed at the bottom.
Note: If you are not using the LightDM display manager, then this application will not work for you.
Simple LightDM Manager Installation
To install Simple LightDM Manager on Ubuntu 11.10, open the terminal and run these commands:
sudo apt-add-repository ppa:claudiocn/slm
sudo apt-get update
sudo apt-get install simple-lightdm-manager
Use then the Unity to dash to start it:
At the main screen of the application, you have two options for changing the background. Either to select an image from your hard drive, or simply fill the background with any color of your choice. To select a background image, keep the "Image" option selected and click the browse button and select any image from your hard disk:
To just fill the background with a color, select the "color" option and click the color button to choose any color of your choice:
For the logo, click the browse button and select any logo of your choice from your hard drive, or simply remove it by checking on "No Logo":
When done, click Apply changes. You can now go and test your new logon background image. Here is mine: