Armbian_5.83_Pine64_Ubuntu_xenial_default_3.10.107_desktop
Turning up to full brightness and turning off work well, by following:
# echo 362 > /sys/class/gpio/export
# echo out > /sys/class/gpio362/direction (turns up to full)
# echo in > /sys/class/gpio362/direction (turns off backlight)I can also turn on and off by echoing:
# echo 0 > /sys/class/gpio362/value (turns on)
# echo 1 > /sys/class/gpio362/value (turns off)And
# xset -display :0.0 dpms force off
# xset -display :0.0 dpms force on