Previously, I had the Catalyst legacy 13.1 drivers installed. Everything worked fine. Then I upgraded to the Catalyst legacy drivers 13.9 drivers. The option "Desktop management - Desktop color" (original Dutch text: Bureaubladbeheer - Bureaubladkleur) was no longer present in the Catalyst Control Center. I could no longer make changes to gamma, brightness and contrast (for R, G and B separately) that would apply to all my screens. Since this is the only place in CCC where you can adjust gamma I was unable to adjust gamma at all.
Also, my profiles (original Dutch text: Voorkeuzes) with custom settings for gamma, contrast and brightness no longer worked. I had one custom profile for my laptop screen and one custom profile for my external monitor connected via HDMI. Clicking on a profile didn't change any settings; gamma, brightness and contrast remained at the default values.
I solved my problems by deinstalling 13.9 Legacy drivers and reinstalling 13.1 Legacy drivers (I was lucky enough to find a copy of these on my hard drive).
My question is: did they remove the option to change color settings in the 13.9 Legacy Drivers? Or did I run into a bug which caused these settings to disappear? Or is there an incompatibility of some sort with my graphics card? Or is it likely that my installation was somehow corrupt? Should I file a bug for this issue at http://www.amdsurveys.com/se.ashx?s=5A1E27D20B2F3EBB?
My graphics card is an Ati Mobility Radeon HD 4570. I have a Dell Studio 1555 Laptop. I have Windows 7 x64 installed.