Make an application close if it stops responding. GNOME Documentation Project gnome-doc-list@gnome.org Force an unresponsive program to close

To force quit any application:

Press AltF2.

A command window pops up. Type xkill. Your mouse pointer turns into an 'x'.

Click on the application to terminate it.

After you press AltF2, you can press Esc if you change your mind about force quiting the application, or if the application starts responding.