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How To Disable Autologin in Lubuntu

Ubuntu 18

In this guide, we will walk through the process of disabling autologin in Lubuntu. Autologin is a feature that allows a user to log into their computer without entering a password. While this feature can be convenient, it may not be suitable for all users due to security concerns. Therefore, knowing how to disable it can be beneficial.

Quick Answer

To disable autologin in Lubuntu, open the Terminal and type "sudo leafpad /etc/lxdm/default.conf" to edit the configuration file. Find the line that says "autologin=username" and add a "#" at the beginning to comment it out. Save the file, reboot your machine, and autologin will be disabled.

Understanding Autologin

Autologin is a feature that automatically logs you into your account when you start up your computer. This feature can save time, especially if you are the only user of the computer. However, it can pose a security risk if your computer is accessible to others.

Disabling Autologin in Lubuntu

Here are the steps to disable autologin in Lubuntu:

Step 1: Open Terminal

First, open the Terminal application. You can do this by pressing Ctrl + Alt + T on your keyboard. The Terminal is a command-line interface that allows you to interact with your operating system.

Step 2: Edit the Configuration File

In the Terminal, type the following command and press Enter:

sudo leafpad /etc/lxdm/default.conf

This command opens the default.conf file in the Leafpad text editor. The sudo command is used to run the following command with superuser privileges, which are necessary for editing system files. The /etc/lxdm/default.conf is the path to the configuration file that controls the autologin feature.

Step 3: Modify the Autologin Setting

In the default.conf file, find the line that says autologin=username. This line tells the system to automatically log in as the specified user. To disable autologin, you need to comment out this line by adding a # at the beginning:

# autologin=username

The # symbol is used to comment out a line in a configuration file, which means that the system will ignore this line when reading the file.

Step 4: Save and Exit

After making the change, save the file and exit the text editor. In Leafpad, you can do this by clicking File > Save and then File > Quit.

Step 5: Reboot Your Machine

Finally, reboot your machine for the changes to take effect. You can do this by clicking Menu > Logout > Reboot.

Additional Steps

In some versions of Lubuntu, you may also need to uncheck the “Don’t ask for password on login” option in the System Settings > Users and Groups.

In Lubuntu 14.04, you may need to edit the /etc/lightdm/lightdm.conf file instead. To do this, open the file in a text editor with superuser privileges, find the lines autologin-user=username and autologin-user-timeout=0, and comment them out by adding a # at the beginning of each line.

Conclusion

Disabling autologin in Lubuntu is a straightforward process that can enhance the security of your system. By following the steps outlined in this guide, you can easily disable this feature and ensure that a password is required to log into your account.

Why would I want to disable autologin in Lubuntu?

Disabling autologin can enhance the security of your system by requiring a password to log into your account. This can prevent unauthorized access to your computer.

How can I open the Terminal in Lubuntu?

To open the Terminal in Lubuntu, you can press Ctrl + Alt + T on your keyboard. This will launch the Terminal application.

What is the purpose of the `sudo` command?

The sudo command is used to run a command with superuser privileges, which are necessary for editing system files. It allows you to make changes that affect the entire system, rather than just your user account.

How do I save and exit the text editor Leafpad?

To save and exit Leafpad, you can click File > Save to save your changes and then click File > Quit to exit the text editor.

Do I need to restart my computer after disabling autologin?

Yes, you need to reboot your machine for the changes to take effect. You can do this by clicking Menu > Logout > Reboot.

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