Originally Posted by phuongxuanhieu
Can you tell me step by step to do that?
If you click that link in your quote, you will see that it does a series of "step by step" experiments, showing how to read and write brightness values (including completely off) to the PW backlight.
Those steps cannot really be broken down into smaller steps. What more do you need? Your request has me a bit puzzled...
You can do those commands from a shell script, or from an USB networking SSH command shell. They are just simple linux commands.