Depending on your desktop environment and its configuration, you may be able to activate this shortcut by pressing Ctrl+Alt+Esc. You could also just run the xkill command — you could open a Terminal window, type xkill without the quotes, and press Enter.

How do I force quit an application in Ubuntu?

Now, whenever an become unresponsive, you can just press the shortcut key “ctrl + alt + k” and your cursor will become a “X”. Click the “X” on the unresponsive app and it will kill the application. That’s it.

How do I force quit a program in Linux Mint?

First, open up your GNOME menu and go to System > Preferences> Keyboard Shortcuts. Second, click “Add” and a window should come up with 2 text boxes, labeled “Name” and “Command.” In Name, type “Force Quit” and in the Command box, type “xkill” and press Apply.