Since the upgrade to 8.42.3 no opengl game will accept any ingame brightness changes. I can change the gamma/brightness all I want, it doesnt change. Downgrading the driver is not that easy because of some conflicts with newer xorg. It's definitely the drivers fault, gamma change works with the open radeon driver. Has this been reported and is there a fix/workaround for this to come?
No announcement yet.
fglrx 8.42.3: brightness problems in OpenGL game