https://bugs.freedesktop.org/show_bug.cgi?id=27452

--- Comment #11 from Dave Witbrodt dawitbro@sbcglobal.net 2010-08-08 09:29:57 PDT --- (In reply to comment #10) [...]

Looking carefully, I am noticing that (with the 5750) there is also a black gap at the top and on the left -- maybe 2 or 3 mm wide.

Umm, strike this, please. Because of the pink line issue, I don't leave the 5750 installed -- I remove it after testing and use the 4850 instead. I see that the gaps (which I hadn't noticed before) are actually normal. The X server, for some reason, detects DPI differently when I swap cards, so what looked to me like screen real estate being cut off at the bottom of the screen was probably an artifact of the fonts being a different size when the 5750 was installed.