I have just installed a ATI Radeon HD 5770, and connected 3 monitors. However I can not get all 3 to display at once - only 2.
I have 1 Dell U2410 connected via display port & 2 19" LCDs connected via DVI. I can not see the 3rd monitor in Windows Display Settings, nor in Catalyst Control Centre...am I missing something?
Also just check on the input settings of your monitor, I have seen some of the Dell monitors that have multiple inputs not auto detect which port the signal os comming in through. Just a minor thing that can be overlooked.
I have the a Dell U2410 which has a display port output - connected to the 5770 via the supplied display port cable. The other 2 LCDs are connected via DVI.
I can only get two displays going at the same time (the Dell & 1 other), neither windows or CCC seem to pickup that I have 3 monitors plugged in.
Have you swapped the monitors around to see if maybe one of the ports are bad? I am asumming that these were all monitors that you had running before hand that worked just fine. If you find out that the port isn't working then yuo can get and HDMI-DVI cable to use that port or return the card and exchange it.