https://bugs.freedesktop.org/show_bug.cgi?id=73911

--- Comment #24 from Paula Breton paula@parashep.com --- (In reply to comment #23)

My laptop with A8-4500m is also affected. With fglrx colors are fine, but I can see little amount of noise (dithering?). With open source drivers, there is no noise.

the noise is definitely dithering, since dithering accomplishes colour blending using patterns similar to noise. it shouldn't be so noticeable in general use, but, trying to accomplish smooth gradients with only 1/4 of the colour values per channel is difficult.

haven't been able to sort this out, catalyst isn't really an acceptable alternative.