In LINUX, turn off the LCD background light-general Linux technology-Linux technology and application information. The following is a detailed description. Open your terminal and enter the following command: sleep 1 & xset dpms force off
Remember, after you press enter, do not touch the keyboard and mouse, wait for a second. Then, your screen is turned off. This is actually disabled, rather than locking the screen or getting screen protection on a black screen-this is not a power consumption mode.
How can I enable the screen again? It's easy. Just touch the keyboard or mouse.
Why do you need to sleep for one second? If you don't need to sleep and use xset dpms force off directly, the screen will be lit again when you press enter to turn off the screen, unless you are too fast!
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