Changes are when you face issues such as a screen frozen. For that types of cases, this guide will be very useful.

To change to alternative terminals:
CTRL and/or ALT+F1 to F10

# free
# top
and then PRESS KEY: #1
# kill -9 PROCESS#
# pkill APPNAME
# pkill -u USERNAME


References:
Topic: Gradually reboot the computer in case of significant system failures
Guide: Emergency keys combinations

