Set Up Dual Monitors in Ubuntu Linux: A Step-by-Step Guide
Setting up dual monitors in Ubuntu Linux lets you plug in a second screen to spread out your work and get more done at once. Ubuntu 22.04 LTS and newer versions automatically detect most second screens the moment you plug them in.
You can open the Display settings in Ubuntu to arrange your screens, choose which one is main, or mirror the same picture on both displays.
Connect your external monitor, then open System Settings and select the Display panel. Drag the monitor icons to arrange them, choose “Join Displays” or “Mirror,” and click Apply. You can also set a primary display and adjust resolution or orientation.
How to set up additional monitors in Ubuntu Linux
Setting up dual monitors in Ubuntu Linux is achievable using the System Settings. This tool lets you connect and arrange your extra screens so they work together, making your workspace more efficient. You can choose how your monitors are positioned relative to each other and which one is primary.
The Settings app serves as the control center for your system, managing everything from user accounts to software updates.

Open the system menu in the top-right corner of your desktop, then select Settings.
On the System menu, select Settings, as highlighted below.

Click the Display tile to open the configuration panel.

The display arrangement diagram allows you to drag your monitors to set them up in the positions you want, creating a visual representation that matches your physical desk layout.
Then, select the display number you'd like to configure as primary or secondary. Feel free to drag the screens again to get the relative positions just right.

When using two screens, you have these display modes:
- Join Displays: screen edges are joined so things can pass from one Display to another.
- Mirror: the same content is shown on two displays with the same resolution and orientation.
- Single Display: only one Display is configured, effectively turning off the other.
With both monitors shown, you can select each monitor's orientation, resolution or scale, and refresh rate if they need adjustments.
And that's all there is to it! You can now close the Settings app.
Conclusion:
- Adding a second monitor to Ubuntu Linux is a simple process that enhances productivity.
- Ubuntu's system settings provide a user-friendly interface for configuring multiple displays, offering options for display arrangement and modes such as Join Displays, Mirror, and Single Display.
- Users can effortlessly set the primary and secondary displays, adjust the orientation, resolution, scale, and refresh rate, and apply the changes with just a click.
- Enjoy the expanded workspace and improved multitasking capabilities with the seamless integration of additional monitors in Ubuntu Linux.
Does Ubuntu support dual monitors?
Note: In recent Ubuntu versions (Ubuntu 22.04 and later with GNOME desktop), the top panel and dock behavior across multiple monitors is handled automatically: The top panel appears on the primary monitor only. The dock (launcher on the left) can be configured in Settings > Appearance > Dock settings.
How do I enable a second monitor in Ubuntu?
To enable a second monitor in Ubuntu, first open the Activities overview and search for 'Displays'. This will open the panel where you can see your connected screens and arrange them by dragging the display icons to match their physical placement.
Can Ubuntu handle 3 monitors?
Ubuntu handles multi-monitor setups well in most cases, but getting exactly the right arrangement - correct resolution, proper scaling, correct primary monitor, and persistence across reboots - sometimes requires going beyond the graphical display settings.
Can you run dual monitors on Linux?
Identical monitors with matching resolutions and horizontal orientations work right away. Mismatched hardware requires additional configuration.
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Richard
Tech Writer, IT Professional
Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.
how do I keep the dual display settings, i have to reset them most times I turn my laptop back on, as my second monitor has moved to the top right of the screen rather than being beside my primary screen.