https://bugs.freedesktop.org/show_bug.cgi?id=43858
--- Comment #24 from Alex Deucher agd5f@yahoo.com 2012-01-18 11:52:47 PST --- (In reply to comment #22)
I came across this bug by an accident when searching for something else, however when reading through there seems to be some misunderstanding.
If I understand correctly, Valter have (according to comment 5 and comment 7) _one_ monitor with two input cables both attached to the same card. While everyone else thinks he has two different monitors... Is this right? And of course the problem is solved when one cable is disconnected (comment 19).
I believe your assessment is correct. The driver sees two monitors attached, one on the DVI and one on the VGA connector. Whether or not they are the same monitor is irrelevant from the driver's perspective since the drier sees two monitors and lights them up. Two HD monitors is really pushing the bandwidth capabilities of this old card.