I'm trying to change contrast/brightness on my monitor, thus I downloaded Gnome Color Manager. It says there is no color profile for my monitor. Then I inserted the monitor's driver CD and imported some color profiles from it. However, Gnome Color Manager told me that the profiles I imported are missing information for whole-screen color correction. I tried searching the web for colour profiles with not much luck.
On Windows I could easily change the brightness/contrast using the ATI Catalyst Control Center. What can I do with this on Natty? Is there another option? The OSD options of my monitor don't do what I want, they work awkwardly. Measuring color with an expensive device is out of question.
The monitor is a Xerox XA3-17.