A single window across the dual heads of the Quadro is no problem.  In every case I have tried, spanning over multiple cards will throw the rendering back to software. 

A solution is to use something like the Matrox Dual Head to Go for each head of the Quadro:

http://www.matrox.com/graphics/offhome/dh2go/home.cfm

You can use the PCI head as the control display.

On 6/22/06, Oisin Lavery <oisinlavery@gmail.com> wrote:
Can GEM output to multiple displays? Can I generate multiple GEM windows or do I have to span a single window across say 4 displays?  I am using an NVidia Quadro FX 500/600 with dual output and will be adding a PCI Video card (or 2) to achieve 4 outputs and possibly another display as a control panel. The screens will be displaying medium resolution avi files so OpenGL computing power should not be an issue (hopefully hard drive will not bottleneck) Has anyone experimented with anything similar?

Any info or advice appreciated,
Oisín

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