I'm running a 3-identical-monitors-setup (Iiyama Prolite E2201W). Two of them are hooked up via DVI, the center one is hooked up via active DVI-Displayport-adapter on the cards' display port.
With every new driver released after 12.10 WHQL, the center monitor hooked up via display port isn't properly recognized by the system anymore, and therefore the output falls back to, and is ultimately stuck at, 640x480. There is no option to change this resolution, and also by manually trying different drivers for the monitor the resolution can't be changed. I consider this a AMD driver issue, since everything was fine before 12.11 beta, and high resolution also works when i completely uninstall any AMD-software with the new uninstall tool. Therefore I currently had to go back to 12.10 WHQL, which was fine for that matter.
So only when I install 12.11 beta, 13.1 WHQL or 13.2 beta, the problem persists that the center display isn't recognized and only outputs in 640x480.
Anyone experiencing the same problem?