I'm using Openbox window manager without DE.
I'd like to get fn + [brightness up/down icon] working like it is in GNOME/KDE, but I’m looking for a lightweight solution without gnome-power-manager and similar.
I know about the xbacklight console program, but it takes a little time to adjust brightness.
I use
xrandr –-output LVDS1 –-set BACKLIGHT 5 Or values other than "5".
See http://linux-software-news-tutorials.blogspot.co.uk/2011/07/how-to-change-screen-brightness-of.html
Control brightness without sudo:
Install brightnessctl and brightness-udev.
Then use:
brightnessctl set 10+ # to increase brightness by 10 brightnessctl set 10- # to decrease brightness by 10 brightnessctl set 10%+ # to increase brightness by 10% brightnessctl set 10%- # to decrease brightness by 10% brightnessctl set 50% # to set brightness to 50% Use man brightnessctl for a full list of commands available.
You can find a working guide on this webpage. You have to have installed the xbacklight program, on Fedora 18:
sudo yum install xbacklight Well, there are two similar things:
a) brightness of the monitor (gamma value)
xrandr --output LVDS-1 --brightness 0.8 b) blacklight of the lamp in the monitor
bl_device=/sys/class/backlight/acpi_video0/brightness #or settings in here: /sys/class/backlight/intel_backlight echo $(($(cat $bl_device)+1)) | sudo tee $bl_device # brightness up So we should take care of two variables. :-)
