Hi

I think the problem you are seeing here with the projector on output 1 is related to HDCP and/or EDID

It would be better to us a DP-VGA adaptor, rather than DP-DVI and a converter:
LINK

You could also use a DVI Parrot to strip out the EDID before the your gefen DVI-VGA converter

Or, if you have another Matrox unit spare - try programming it as a single head device at the desired resolution. The Matrox TH2G-D and DH2G-D does not enable HDCP and can also convert from DVI input to VGA output. The TH2G-D edition will work on a DP output, but only at single-link resolutions. (which is fine for a single 1280x1024 output)

I think this is the only change you will have to make to get it working - as it sounds like you've got the rest of the system configured ok.


General info about EDID & HDCP:
In OC 10.6.x Apple changed the way in which they deal with HDCP compliance.
Essentially, any HDCP compliant equipment connected to the MacPro will enable the HDCP signal
Many LCD monitors and DVI distribution amplifier are HDCP compliant and will enable the Mac HDCP signal, irrespective of content.
However - you can get round this by adding a Pharos DVI Parrot EDID emulation tool - this stops the HDCP signal from being enabled - thus allowing connection of other non-HDCP compliant equipment.

You may wish to consider using either Pharos DVI ParrotDVI EDID Emulator / Gefen DVI Detectives if HDCP is un-desirable...

The use of a Pharos DVI ParrotDVI EDID Emulator / Gefen DVI Detectives is essential if you are connecting to NON-HDCP devices. (ie led screen controllers or DVI extenders)

Matrox DH2D-D, TH2G-D and Datapath x4 also disable HDCP - and non-compliant kit can be connected to their outputs without requirement for further DVI Detectives or Parrots

http://www.dviparrot.com/
http://www.gefen.com/kvm/dproduct.jsp?prod_id=4714

Please see notes on the catvx support forum:
http://chaldee1.gotadsl.co.uk/~richa...highlight=hdcp


S