I want to be able to control the brightness of my screen when on battery.At the moment it dims to the lowest brightness after a short while.It would be good if i could set the brightness and also control how long until it dims. I watch video sometimes on battery and when it dims i cannot see the video properly.The laptop i am using is Lenovo E420.
Maybe i need to edit some files in /etc/acpi/events not sure what i need to do
