How can I set Ubuntu to full screen?

The method to set full-screen on Ubuntu depends on the application or desktop environment you are using. Here are some common methods:

1. For most applications, you can typically use the keyboard shortcut F11 to toggle full-screen mode. This applies to most web browsers, video players, and office suite applications.
2. In the Unity desktop environment, you can switch an application to full-screen mode by clicking on the full-screen button (usually a square icon) in the application window.
3. In the GNOME desktop environment, you can use the Alt + F11 shortcut to switch applications to full-screen mode.
4. For other desktop environments: If you are using a different desktop environment, you can try using the full-screen switching shortcut key or look for the full-screen option in the application menu.

If you are unable to find the full-screen option or switch to full-screen mode, try looking at the help documentation of the respective application or search online for the specific full-screen settings of the application.