How to change screen saturation?

[Kai-Uwe Behrmann]

Am 02.01.11, 20:42 +0100 schrieb Alberto González:
> I just got a new laptop (Dell XPS 15) that I ordered with an optional RGB LED
> display. This display has a high color gamut (around 98% of AdobeRGB color
> space). The problem is that probably to show off this capability the
> manufacturer set it by default to a very high saturation level. On Windows I
> just went to Intel graphics control center and set the saturation to -20.
> However, on Linux I've been unable to find any way of doing something similar.

It reads so simple, but it is not. The driver utilised the GPU for the 
small saturation effect. It could be computed in software but at a 
forbiden high cost. So first the desktop needs proper OpenGL + Shader 
support to deploy smooth modern graphics features. If nouveau can not 
(yet) deliver that, nvidia drivers are a fine option. On top of proper 
hardware acceleration one can run services, which need real computational
throughput like colour correction of movies.

kind regards
Kai-Uwe Behrmann
-- 
developing for colour management 
www.behrmann.name + www.oyranos.org