Take the 2-minute tour ×  Possible Duplicate: How to increase
brightness in smaller steps?  When I press Fn + F6, the
brightness increases. Lets say the brightness increases by 1
unit. How do I make it increase by 0.5 units? I hope you
understand my question. I'm running Ubuntu 12.04 32 bit. If
thats important.  share|improve this question add comment
marked as duplicate by Tom Brossman, devav2, Eliah Kagan,
hexafraction, Jorge Castro Oct 8 '12 at 22:27   2 Answers  Using
xbacklight you can increase or decrease your brightness by
whatever percent you prefer.  xbacklight -set 1  or xbacklight
-set 0.5 it accepts integer of even fractions.  share|improve
this answer My question is how do I change the amount by which
it increases when I use the keyboard shortcut? –  Schweinsteiger
Aug 25 '12 at 21:45 Its manufacturer defined, you can't modify
it. –  joystick Aug 25 '12 at 21:50 add comment  Sometimes it is
only possible to increase and decrease it by a sections like
from 1 to 3 any nothing in between can be sel