How to kill a frozen screen in Ubuntu 16.04

I am using Ubuntu now full-time, after formatting my machine and getting rid of windows or dual boot. While using it suddenly my Google Chrome screen was frozen and none of the controls were working. I tried killing it from task bar by right clicking on the icon -> Quit but it was not working at all.

So i decided to google it for solutions, Like how to kill a program(forcefully) and i came up with an interesting utility which is already there in Ubuntu/Linux machines Xkill.

What is Xkill?

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 on a user’s screen. If no resource identifier is given with -id, xkill will display a special cursor as a prompt for the user to select a window to be killed. If a pointer button is pressed over a non-root window, the server will close its connection to the client that created the window.

Command:

➜ ~ xkill
Select the window whose client you wish to kill with button 1....
xkill: killing creator of resource 0x4200001

When you enter xkill command on terminal without any parameter it will ask you to choose the window/client to kill, so simply switch tab, go to the client that you want to close and click on the client. It will forcefully close the client.

Happy sharing! Loving Ubuntu(Linux)! Command rocks! 🙂

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