Introduction - If you have any usage issues, please Google them yourself
The raspberry pie that was on at night was always lighting the red power indicator. It was so uncomfortable that it was hard to turn it off! I still prefer to turn the RGB light on the constellation of the unicorn into blue for the night light, after all, the upward illumination is not uncomfortable.
Add the following lines to /boot/config.txt to disable two indicator lights of raspberry Model 2B.