My laptop’s screen brightness does not always recover properly after returning from a suspend, and like to reset the brightness from the command line. Is that possible, and if so, what command should I use?
Depending on your OS/version there are different ways to do it, of course replace
VALUE with your desired value:
sudo echo -n VALUE > /proc/acpi/video/VGA/LCD/brightness
sudo echo -n VALUE > /proc/acpi/video/GLX0/LCD/brightness
sudo apt-get install xbacklight
and change the brightness without getting root:
xbacklight -set VALUE