I'm running 11.10 and Intel HD 3000 graphics, if it helps. I've looked at previously posted solutions and tested each. None have worked so far.
My laptop has both Windows 7 and Ubuntu installed, and one day I shut down Windows 7 in a lower graphics setting because I was saving power throughout the day. I booted right into Ubuntu and noticed that the colors were no longer as smooth on the desktop background. I suspect it's just an issue with color depth. Also, I don't understand why this change occurred after I changed something in the Windows 7 OS. Anyone know?