![]() However, you can disable the built-in display on startup and use the external screen only by adding a Kernel parameter. I can’t figure out how to make it work in external screen as it seems to be responsible to BIOS. Now, save your work and log out to see the magic! (Optional) Disable the built-in display on startupĪnother annoying thing when using multiple monitor in Ubuntu Linux is that the Grub boot menu screen is always displaying in built-in monitor. For other Linux, you may have to replace gdm3 in command with gdm. Type user password (no asterisk feedback) when it asks and hit Enter. Then, run command: sudo cp ~/.config/monitors.xml /var/lib/gdm3/.config/ To do so, press Ctrl+Alt+T on keyboard to open terminal. By copying the file into GDM’s config folder will make it also work for the login screen. Step 2: Apply Primary Display for GDM Login ScreenĪs mentioned above, the previous step generates a XML config file automatically. Though, you may switch to another display as primary at anytime as you want. This step is required to generate a XML config file under user’s ‘. ![]() Then, navigate to Displays in the left, and choose the monitor in the right you want to use it as primary. Step 1: Set Primary Display in Gnome Control Centerįirst of all, open Settings (aka Gnome Control Center) from the top-right corner system tray menu. NOTE: This tutorial is tested only in Ubuntu with default GNOME desktop! Though, it may also work in other Linux with GNOME (e.g., Fedora, Debian and Arch) or Linux with GDM display manager. In case you use the external monitor for the most time, you may also set it as primary display for the GDM login screen by following this tutorial. However, the login screen is always sticking to the built-in display in my laptop. It’s quite easy to set primary display in Ubuntu with default GNOME desktop. Have multiple monitors connected into your Ubuntu machine? Here’s the quick tip shows you how to configure which one to display the login screen.
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