Turn off Screen in Ubuntu Linux to Safe Energy

Smart women create a special button for turning their display screens off in Ubuntu. This is a short trick for nice women who want to safe energy of their battery on a Linux laptop.

Test it first !

1. Press alt+F2
2. Enter: xset dpms force off

If the laptop screen turns off, then it works !
If this method does not work. Use this command instead:
gnome-screensaver-command --activate

Create a Button

1. Right-click on any vacant space on the panel.
2. Choose the entry "Add to Panel".
3. Set the Button Properties:

Type: Application
Name: Turn off Screen
Command: xset dpms force off

Click on the icon in the dialog to change icon.
Use something like: /usr/share/icons/gnome/32x32/apps/screensaver.png

If this method does not work. Use this command instead:
gnome-screensaver-command --activate

It will start the screen-saver manually.
The screen-saver must be set to black screen, if you want to save power.
Very wise women combine the two commands into one sequence to save even more energy.
Wise Command: sh -c "xset dpms force off && gnome-screensaver-command --activate"

This combination of commands was also working in XFCE, Xubuntu and Linux Mint.

Have Fun !