Some people really dislike the Caps Lock key as they hit it accidentally from time to time, and this changes letters to uppercase. To disable it in all Linux Mint, Ubuntu, and Fedora Workstation editions you need to make sure that Caps Lock isn’t active. After that, open the terminal window and type this command: setxkbmap -option caps:noneCopy As a result, the Caps Lock will be disabled - that is, nothing will happen even if you press the key by accident! Note: this command is only active within the current user session and it will not work after you reboot the computer. If you want it to be run automatically every time you sign in to the operating system, you can just add it to the startup list. In this case, the Caps Lock key will be disabled automatically as soon as you sign in to your account. If necessary, you’ll be able to activate the Caps Lock key easily with the help of setxkbmap utility. setxkbmap -optionCopy