How to install lxqt on ubuntu

Overview

LXQt is a free and open-source desktop environment, a fork of LXDE and Razor-qt. It aims to be lightweight and modular, making it an excellent choice for users who want a fast and responsive desktop experience, especially on older or less powerful hardware. Installing LXQt on Ubuntu allows you to switch from the default GNOME desktop to a more resource-efficient alternative without needing to install an entirely new operating system.

Why Choose LXQt on Ubuntu?

Ubuntu, by default, comes with the GNOME desktop environment. While GNOME is feature-rich and user-friendly, it can be demanding on system resources. If you're experiencing slow performance, have limited RAM, or simply prefer a minimalist and fast interface, LXQt is a compelling alternative. Its low memory footprint and efficient design can breathe new life into older computers or make modern systems even snappier.

Installation Methods

There are generally two primary ways to install LXQt on Ubuntu:

1. Using Ubuntu's Official Repositories: This is the simplest and safest method. Ubuntu's default repositories contain a stable version of LXQt. While it might not be the absolute latest release, it's well-tested and integrated with the Ubuntu system.
2. Using a PPA (Personal Package Archive): For users who want the very latest features and updates for LXQt, adding a PPA is often necessary. PPAs are third-party repositories that can provide newer software versions than what's available in the official Ubuntu channels. However, use PPAs with caution, as they are not officially supported by Ubuntu and can sometimes lead to system instability if not managed properly.

Step-by-Step Installation Guide (Using Official Repositories)

This method is recommended for most users.

1. Open the Terminal: You can do this by pressing Ctrl + Alt + T or searching for 'Terminal' in the application menu.
2. Update Package Lists: Before installing any new software, it's crucial to update your system's package lists to ensure you're getting the latest available versions. Run the following command:

   sudo apt update

3. Upgrade Existing Packages: It's also good practice to upgrade any installed packages to their latest versions. This helps prevent potential conflicts.

   sudo apt upgrade -y

4. Install LXQt: Now, you can install the LXQt desktop environment. The command to install the full LXQt meta-package is:

   sudo apt install lxqt -y

   This command will download and install LXQt and its essential components. The -y flag automatically confirms any prompts during the installation.

5. Reboot Your System: After the installation is complete, it's best to reboot your computer for the changes to take full effect.

   sudo reboot

Step-by-Step Installation Guide (Using a PPA - Advanced)

Note: This method is for users who need the latest LXQt features and are comfortable with managing PPAs. Always ensure you trust the PPA you are adding.

1. Open the Terminal: Press Ctrl + Alt + T.
2. Update Package Lists and Upgrade: (Same as steps 2 & 3 above)

   sudo apt update && sudo apt upgrade -y

3. Add the LXQt PPA: A common PPA for LXQt is often maintained by the LXQt team or community. You'll need to find the current, recommended PPA. For example, if a PPA like `ppa:lxqt/ppa` exists and is recommended, you would add it using:

   sudo add-apt-repository ppa:lxqt/ppa

   Follow any on-screen prompts to confirm adding the repository.

4. Update Package Lists Again: After adding a new repository, you must update your package lists again.

   sudo apt update

5. Install LXQt: Now install LXQt.

   sudo apt install lxqt -y

6. Reboot Your System:

   sudo reboot

Switching to LXQt at the Login Screen

Once your system has rebooted after installation, you'll need to select LXQt as your desktop environment before logging in.

1. Log Out: If you were automatically logged in, log out of your current GNOME session.
2. Login Screen: On the login screen, after you enter your username, look for a gear icon or a session selection option. This is usually located near the password field or in a corner of the screen.
3. Select LXQt: Click on the icon and choose 'LXQt' from the list of available desktop sessions.
4. Log In: Enter your password and log in. You should now be greeted by the LXQt desktop environment.

Post-Installation Tips

• Configuration: LXQt is highly customizable. Explore the 'Preferences' or 'Settings' menus to adjust themes, panels, shortcuts, and other aspects of the desktop to your liking.
• Default Applications: You might want to set your preferred default applications for web browsing, email, etc., through LXQt's default application settings.
• Removing GNOME (Optional): If you are certain you want to use LXQt exclusively and want to free up disk space, you can consider removing the GNOME desktop environment. However, be very careful with this process, as removing essential system components can break your installation. It's generally safer to leave GNOME installed unless you are an experienced user and have backed up your data.

By following these steps, you can successfully install and start using the LXQt desktop environment on your Ubuntu system, enjoying a lighter and potentially faster computing experience.