FGLRX + Black Bars at 1920x1200 (or 1920x1800).

When I first enabled hardware accelerated drivers in Ubuntu, I thought I had stumbled across an odd bug -- when I was using the default resolution (1920x1200), I had two black bars at the left and right side of my screen. I was totally stumped, and decided it was a driver bug.

Fast forward a month later, trying to enable hardware accelerated drivers again, and the same issue persists.

Well, apparently the fix is pretty trivial: Open up the "Catalyst Control Center" (in your System --> Preferences menu entry), select your current display, go to the adjustments tab, and for scaling options, move the slider all the way to the right (0% in other words). See attached picture.