/bin/echo 0 > /sys/class/backlight/intel_backlight/brightness
made the screen completely dark, but the Fn keys did not work. I needed to type a
echo 4000 > /sys/class/backlight/intel_backlight/brightness
to be able to see the screen again.
/bin/echo 0 > /sys/class/ backlight/ intel_backlight /brightness
made the screen completely dark, but the Fn keys did not work. I needed to type a
echo 4000 > /sys/class/ backlight/ intel_backlight /brightness
to be able to see the screen again.