Haven't had a chance to gather much data on this, but on a machine at home with a fairly old radeon card (might be a 9200 or 9600, I can't look right now), debian etch has no problem running the display with the xorg radeon driver it has, but fedora 8 can't talk to the display. When I look at the log file, I see it believes that it should be talking to DDC_VGA (which isn't connected), doesn't find a monitor (which makes sense), and refuses to talk. The log when I boot debian doesn't mention VGA at all, but goes right to the DVI connector and works fine. Just wondered if this rings any bells for anyone before I kill a lot of time to examine it in more detail.
