Hey folks. Having a problem that my google-fu can't track down the answers to, so I thought I'd turn to the experts.
I just bought a Radeon R7770 video card. It's an XFX branded one, marked as "Super Overclocked" or some such nonsense. What this one seems to have over other 7770s is a second DVI port underneath the first set of ports. The card works great, and with the new widescreen monitor I purchased, I'm very happy with the results. Except, I can't get the computer to recognize a second monitor.
I've tried the upper DVI port with three different monitors, with different combinations of cables and adapters (I don't have a DVI cable lying around the house and the monitor didn't come with one, strangely) and it works fine. But the same arrangements of monitors/cables/adapters on the bottom DVI port get no signal. Detecting the displays still just shows the one primary monitor, and if there's not one plugged into the top port, I get no picture whatsoever.
Thoughts? I'm running the Catalyst 12.7 beta drivers, and can provide any other technical information you might need. Thanks!