https://bugs.freedesktop.org/show_bug.cgi?id=27708
--- Comment #13 from Alex Deucher agd5f@yahoo.com 2011-02-18 10:41:26 PST --- (In reply to comment #12)
I have similar problem on my Ubuntu box, with slightly different. The mother board is an ECS A740GM-M v7.0, which uses AMD-740 chipset, integrated ATI Radeon 2100. The chip supports multi-head, both VGA and DVI, however, the manufacture installs VGA connector only, no DVI connector installed.
This is a different issue. Please open a new bug for this and attach your xorg log, dmesg output, and a copy of your vbios and we can add a quirk to fix the connector tables.
To get a copy of your vbios(as root): (use lspci to get the bus id) cd /sys/bus/pci/devices/<pci bus id> echo 1 > rom cat rom > /tmp/vbios.rom echo 0 > rom