How to Change the Login Wallpaper Image in Ubuntu (Example)

One of the benefits that Ubuntu offers is the possibility of customize the different aspects of the operating system to your liking, including the login screen background that has been set by default by the programmers.

Although changing the background is an option that is enabled to change the desktop image and the lock screen, when it refers to the one that is established in the login, it is something totally different.

It turns out that Linux sets a default configuration, in which the user is required to enter their password to start using the computer.

This It is very useful for those who share the computer with other people, or those that are public. It is in this aspect that some recognize that the content set as the login screen background becomes a bit boring.

That is why here you will find different methods, depending on the version of Ubuntu you use, to modify this aspect and determine an image that is more attractive to you.

Discover the session manager to change the login screen background

Since Ubuntu does not allow a direct option to perform these types of modifications, it is necessary open the roads through the settings operating system.

Do not be scared, because these series of steps are simpler than they seem. Therefore, it will only be necessary to follow the instructions set out in this article to the letter.

One of the main features of Linux is the possibility of installing a session manager for how to use the computer. Which can be done by default or manually by the person.

session manager to change the login screen background

In case of not knowing which session manager is being used. The first step is to find out which one is installed on your version of Ubuntu.

To achieve this, you will start by opening the recognized “Command Window” or “Terminal” through the shortcut “Control + Alt + T“Where you only have to write”sudo cat / etc / X11 / default-display-manager”.

By pressing on “Enter”, it will automatically return the name of the manager that is being used, and how GDM3 is being used in this example. The next step is to search for the image you want to establish through a search engine such as Google.

Identify the image that will be the new login screen background

To start making the modification, it will be necessary locate the image (regardless of the format) inside the background folder of the system.

This can be done in two ways, both through the “Terminal”, which will be accessed again through the shortcut. The first one sets the image automatically within the file, which will be achieved through the following command:

  • “Sudo cp ~ / Images / Image.png/ usr / share / backgrounds “

It should be noted that where the name “Imagen.png” goes, it must go the name of the new wallpaper along with its format. Accompanied by the route where you are.

The second method is through the file manager, which can be opened from the “Terminal” by entering the command “Sudo nautilus / usr / share / backgrounds”.

Once the window opens, you just have to copy the image that you have downloaded into this folder. And so proceed to the next step.

Edit the CSS file

The last step to change the Ubuntu login screen background requires change programmatic language that makes up this configuration.

Identify the image that will be the new login screen background

This can be accomplished by entering the command “Sudo vim /etc/alternatives/gdm3.css” inside “Terminal”, where you should look for the line of “LockDialogGroup” and place the following modification:

  • “#LockDialogGroup {
  • background: url (file: ///usr/share/backgrounds/Imagen.png);
  • background-repeat: no-repeat;
  • background-size: cover;
  • background-position: center; } “

Finally, it will only be necessary save the changes and close the editor. Then proceed to close session or restart the computer to verify if the modification was made.

In this simple way you can change this interesting aspect of your Ubuntu team. Where you can enjoy a very attractive image every time you start the computer.

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