This is a "feature" in Windows 7, but I can't see how it is useful; it just annoys me.
Every power plan and the AC/battery mode has its own setting for brightness intensity. So, if I switch power plans, the intensity changes, same for when I plug the computer in.
I always setup the light intensity according to light conditions, rarely the power plan. If I really want to save battery, I'm intelligent enough to figure out that I should lower it by myself.
So, my question is, is there a way for Windows 7 to leave the backlight setting alone when switching power plans or AC/battery modes?