I could use some help here. My new PC has two ASUS 6950 in crossfire. The display's maximum resolution is 2560x1600, but windows will not allow me to raise it past 1600x1200. Any idea what I'm doing wrong?
I'm new to the crossfire system, so I may be missing something. Each of the video cards has two DVI outputs, and only the DVI ports of one of the graphic cards will display something on screen. But regardless of the DVI output I use on that card, the resolution is limited by windows to 1600x1200.
I have the latest AMD drivers, windows 7 64 bit. The monitor's settings tell me that the input is indeed 1600x1200 and that it can go up to 2560x1600.
The screen is a Dell U3011. It was running fine at 2560x1600 with a single 5850 card on my previous PC. And I didn't have to configure anything, windows immediately set the resolution to max. Now with two 6950 in crossfire, I'm stuck at 1600x1200.
I have the latest drivers for both the monitor and graphic cards.
I have a hazy, vague memory of having this problem myself once with a build. If I recall, buried somewhere in CCC there is 'resolution limit' option and I had to increase that before I could select the resolution I wanted...
The display and cable are brand new, and they work fine on my old PC which has an older ATI card.
Funny fact though: the drivers for the monitor on that old PC report "generic PnP" and are older than those installed on the new one. I'll try uninstalling the drivers on the new PC and see what happens.