There is usually a program /usr/bin/intel_backlight that will allow you to set the backlight setting
/usr/bin/intel_backlight xx
where xx is some value between 0 and 100
For older systems, use
sudo setpci -s 00:02.0 f4.b=xx
where xx is 00-FF, and 00:02.0 is my VGA display device as shown by lspci
Alternatively, for newer devices which use the intel_backlight interface, use this command
echo xx | sudo tee /sys/class/backlight/intel_backlight/brightness
where xx is anything from 0 (this will blank out your screen...) to whatever is displayed by cat /sys/class/backlight/intel_backlight/max_brightness
Though it changes more than just brightness, the command
xgamma -gamma xx
where xx is anywhere from 0->1.5 will also change the screen. You can go higher than 1.5, but I haven't tried anything higher.
http://wilmor24.wordpress.com/2010/05/11/change-screen-brightness-from-terminal-ubuntu-10-04/
https://bbs.archlinux.org/viewtopic.php?id=137164
No comments:
Post a Comment