In game you should be able to adjust gamma, however moving the gamma slider does nothing. I don't know if this is even the right component. I was thinking if this is a server issue, however the gamma settings works fine with another driver (NVIDIA proprietary) on my second machine. BTW xgamma command works fine.
This is with: RV530 GPU
X.Org X Server 1.11.3
Created attachment 54987 [details]
Can you change the gamma settings with xgamma -gamma x.y ?
If not, how about xrandr --output LVDS --gamma x.y:x.y:x.y ?
(In reply to comment #2)
> Can you change the gamma settings with xgamma -gamma x.y ?
> If not, how about xrandr --output LVDS --gamma x.y:x.y:x.y ?
Yes, its already mentioned in the description, "xgamma -gamma x.y" works fine.
*** This bug has been marked as a duplicate of bug 27222 ***