The Media Key Mapping Issue
A bizarre but relatively common annoyance on Ubuntu Linux occurs when the operating system incorrectly maps a specific keyboard shortcut or a physical media key (often found on gaming keyboards or laptops) to the GNOME Calculator application. You might be playing a game, typing rapidly, or attempting to adjust your system volume, and suddenly the Calculator app springs to the foreground, interrupting your workflow. This happens because the desktop environment is intercepting a hardware signal (like a specialized “macro” key or an unconfigured media button) and defaulting it to launching the calculator as a fallback action.
How to Rebind or Disable the Calculator Shortcut
The solution is to find the specific keyboard shortcut that Ubuntu thinks is mapped to the calculator and disable it or assign it to something else.
1. Open your application grid (press the Super/Windows key) and type Settings.
2. Launch the Settings application.
3. In the left-hand navigation sidebar, scroll down and click on Keyboard.
4. Scroll down the right-hand pane to the “Keyboard Shortcuts” section and click the View and Customize Shortcuts button.
5. In the list of shortcut categories, click on Launchers.
6. Look for the entry labelled Launch calculator.
7. You will likely see a keybinding assigned to it (such as “Calculator” if your keyboard has a dedicated button, or a weird combination of keys). Click on that entry.
8. A small dialog box will appear asking you to set a new shortcut. To completely remove the shortcut and stop the accidental launches, press the Backspace key on your keyboard.
9. The binding will change to say “Disabled.” Click the Set button to confirm.
Ubuntu will no longer listen for that specific keystroke, meaning your accidental button presses will no longer spawn unwanted calculator windows on your desktop.