I want to stretch out the brightness of N900. I mean to have the lowest possible when light meter is completely dark, and the highest possible under sunlight so that I don't have to use the brightness applet at all. The auto mode is good but it doesn't get to the limits.
I don't know f I have explained it correctly I want more aggressive auto brightness.

Does anybody know how to tweak the brightness control? Where is the brightness configuration file, if any?

have you disabled the "Power Saving Mode"?

in fact, no. Let's see...

Now I feel dumb...

It didn't solve the problem. I still need to turn down the light in dark environments and up in well lit ones. Any ideas about the lighting control? mce.ini maybe?