How to easily kill a frozen / locked-up app or window in Ubuntu

This tutorial shows you how to easily kill / force quit an application or window that freezes or stops responding using xkill & shortcut key. Xkill is a utility for forcing the X server to close connections to clients. This program is very dangerous, but is useful for aborting programs that have displayed undesired windows… Continue reading How to easily kill a frozen / locked-up app or window in Ubuntu