Where does colormapping take place?

[Kai-Uwe Behrmann]

Am 20.04.12, 17:16 +0200 schrieb N. Coesel:
> I have the following problem. I need to be able to adjust gamma, brightness 
> and contrast of a display which has no such controls (its on a framebuffer 
> device using RGB565 Truecolor). This means the adjustment has to be done in 
> software. Setting the gamma in the config file also doesn't work and xrandr 
> is also unable to set gamma values.

You are looking for kind of calibration, right? Did you try xgamma?

kind regards
-- 
Kai-Uwe Behrmann
www.oyranos.org