You can change the brightness of your DevTerm in the terminal. To do so, just echo a new value into the brightness file which lives @
/sys/class/backlight/backlight@0. In this folder, you’ll find some useful files, such as: actual_brightness, brightness & max_brightness.
This was tested and accomplished on the DevTerm running raspbian.
To change brightness, you can change
brightness to anything between 0 and 9. 0 being backlight off, and 9 being brightest. The device defaults to 5.
To change brightness, type in (changing
N for brightness 0 thru 9):
echo N > /sys/class/backlight/backlight@0/brightness
- For quicker access to changing brightness, see @guu’s solution for adjustment via FN keys.
- Setting brightness to
0turns off the backlight and makes the display near impossible to view.
- This command may require you to elevate your terminal session to root using
sudo bash -c "echo 5 > /sys/class/backlight/backlight@0/brightness"