Setting the default terminal emulator is easy by using the update-alternatives command. Open a terminal window and type in the following command:

You’ll see something similar to the following, although you may not see as many options on your system:

Just type in the number of the selection and hit enter. Now when you launch the terminal via the menu item, or by typing in x-terminal-emulator at the command line, you will see the correct window pop up.

Selection Alternative ———————————————– 1 /usr/bin/xterm 2 /usr/bin/uxterm 3 /usr/bin/koi8rxterm 4 /usr/bin/lxterm *+ 5 /usr/bin/gnome-terminal.wrapper 6 /usr/bin/konsole 7 /usr/bin/xfce4-terminal.wrapper

Press enter to keep the default[*], or type selection number: