The Disappearing Panel
Ubuntu’s default GNOME desktop environment features a persistent Top Bar that houses your clock, system tray, network status, and application menus. While the standard Ubuntu installation keeps this bar permanently visible, many users install extensions (like “Hide Top Bar”) or use alternative desktop environments to maximize their screen real estate. These extensions automatically hide the Top Bar, requiring you to shove your mouse cursor against the very top edge of the screen to make it reappear. While this saves a few pixels, it can make quickly checking the time or your battery life incredibly tedious.
Restoring the Persistent Top Bar
To keep your system information visible at a glance and stop Ubuntu from automatically hiding the Top Bar, you must disable or reconfigure the extension responsible for the behavior.
Since the default GNOME behavior is a fixed Top Bar, you need to manage your installed extensions. Open your application launcher and search for the Extensions app (if you don’t have it, you can install it via the terminal with sudo apt install gnome-shell-extension-prefs). Open the Extensions app and scroll through your list of installed tweaks. Look for an extension named “Hide Top Bar”, “Auto-hide Top Bar”, or something similar. To completely stop the behavior, simply click the toggle switch next to the extension to turn it Off. If you still want the extension active but only want the bar to hide when a window touches it (intellihide), click the gear icon next to the extension to adjust its specific sensitivity settings.