The sub-pixel order is set to rgb (like I do in Ubuntu). I can definitely see a (worse) change if I use a different mode. Disabling the sub-pixel smoothing didn't improve anything relatively to the pain generated by the exposure to the screen.And the sub-pixel order is equal too?
I'll come back to all of you in three days with some pictures to allow you to properly compare the rendering in Ubuntu-based distro (currently Maya13) and Debian Wheezy with the same graphic drivers, on the same computer.
Nevertheless, to me, it seems that one of the best way to properly identify and describe in a more objective manner my issue should be to get on of these color calibrator such as the ColorHug.
Until them, I'll keep on reading the thread in silence, but please, stay calm and respectuous with each other : my issue is not worth turning people mad at each other ;)
/lionel