Monitors are connected as DVI-DVI-HDMI.
On AMD Eyefinity Technology, there is this remark at the bottom:
Do you have one screen connected with DisplayPort?
This cannot be solved with a passive adapter. Issue is in hardware and comes down to signaling on DVI, HDMI and DisplayPort.
If I recall correctly DVI and HDMI require an own clock signal per output. Because DisplayPort is a package protocol it requires only one clock signal per card. ATI Radeon HD 5000-series has two clocks for DVI/HDMI so it is possible only to use 2 of those devices, adapters do not change this fact.
There is however an active adater, that allows you to transform DisplayPort signal to DVI-signal. More information about the device here
So what you need is a native DisplayPort monitor or an active device that transforms DisplayPort signal to DVI/HDMI.
protected by Jeff Atwood♦ Jun 7 '10 at 6:59
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