Matrox Triple Head not recognized!!

[Mr_P]

For TH2G and DH2G there is a fundamental stopping point.
Don't try to run more than 4 outputs with Catalyst.
Either use a single TH2G and a single second output or use 2 DH2G for 4 outputs.

Yes theres a stopping point - for 1024x768 'Don't try to run more than 4 outputs with Catalyst' - true

Think we coud go round in circles here -

Theres no hard and fast rule. - except: test what you want to do before you need to do it!

I've had 6 x 800x600 running fine 1st go on an X1900XT in a 2007 MacPro running tiger. with 2 x TH2G

Also had 4 x 1024x768 from 2 x DH2G on the same spec...

TEST , try, test and make sure you can repeat it....

Simon

[samsc]

TEST , try, test and make sure you can repeat it....

Simon

using TH2G pushes towards or over what the graphics card can support.
Using Dual TH2G pushes even closer-

the restrictions are not from my software -

they are from the graphics card and whatever design decisions have been made to support certain resolutions.

These limits are not likely fixed but can change up or down with each revision of apple software or drivers, or change in graphics card.

Matrox also changed the resolutions they support between analogue and digital editions.

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The point at which this stops working well enough is dependant on usage.

I have noticed different performance from graphics card with different content and image sizes, when using triple heads.
x2600 for example dont seem to like larger images or triple heads.

but there are no rules that can be relied upon.