My HD 7770 will only run two monitors. The catalyst center will not even pick up the other monitor. Win 7 will at least detect it but will not allow me to save the settings to extend the desktop. It lists the Acer as Analogue even though I am using the DVI input. I am using two HP LP 2465 and one Acer AL2416WB (DVI-D). I have tried the following configurations:
HD 7770 Video Card DVI to HP LP 2465 (Monitor 1) DVI input
HD 7770 Video Card MiniDisplayport to HP LP 2465 (Monitor 2) DVI input
This configuration works great, but it is only two (2) monitors. It is when I plug in the third monitor that I have trouble. As soon as I plug in the third monitor, one of the two that are already working, suddenly goes black from a loss of signal. I am running Catalyst 12.3.
On the HD 7770 video card outs I have tried the:
DVI+MDP+MDP - only two monitors will work
DVI+MDP+HDMI - only two monitors will work
Could it be a product of the age of the monitors? If anyone has any ideas I am all ears.
Thanks for the help.
HD 7770 Video Card DVI to HP LP 2465 (Monitor 1) DVI input
HD 7770 Video Card MiniDisplayport to HP LP 2465 (Monitor 2) DVI input
This configuration works great, but it is only two (2) monitors. It is when I plug in the third monitor that I have trouble. As soon as I plug in the third monitor, one of the two that are already working, suddenly goes black from a loss of signal. I am running Catalyst 12.3.
On the HD 7770 video card outs I have tried the:
DVI+MDP+MDP - only two monitors will work
DVI+MDP+HDMI - only two monitors will work
Could it be a product of the age of the monitors? If anyone has any ideas I am all ears.
Thanks for the help.