Matrox Triple Head not recognized!!

[SourceChild]

Richard brings up a good point. Don't follow my bad example of hacking the OS. Not even I get reliable results.

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.

[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.

---

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.

[RedLightning]

along the lines of TH2G is it possible to add more resolutions to mirror the capacities of the TH2G?

I just did a permanent club installation with 2-servers each with a TH2G the native resolution of the projectors were 1024x720 and the install/projector placement (36 projectors in groups of three...) was based around this size of image...

[samsc]

along the lines of TH2G is it possible to add more resolutions to mirror the capacities of the TH2G?

I just did a permanent club installation with 2-servers each with a TH2G the native resolution of the projectors were 1024x720 and the install/projector placement (36 projectors in groups of three...) was based around this size of image...

you mean mix sizes in catalyst?

[RedLightning]

yes.

[emilianomorgia]

6 x 1280x1024

Hardware Overview:
Model Name: Mac Pro
Model Identifier: MacPro3,1
Processor Name: Quad-Core Intel Xeon
Processor Speed: 3 GHz
Number Of Processors: 2
Total Number Of Cores: 8
L2 Cache (per processor): 12 MB
Memory: 6 GB
Bus Speed: 1.6 GHz
Boot ROM Version: MP31.006C.B05
SMC Version: 1.25f4
Serial Number:


Graphics/Displays:
NVIDIA GeForce 8800 GT:
Chipset Model: NVIDIA GeForce 8800 GT
Type: Display
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 512 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0602
Revision ID: 0x00a2
ROM Revision: 3233
Displays:
Display:
Resolution: 3072 x 768 @ 75 Hz
Depth: 32-bit Color
Core Image: Hardware Accelerated
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Rotation: Supported
Display:
Resolution: 3072 x 768 @ 60 Hz
Depth: 32-bit Color
Core Image: Hardware Accelerated
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Rotation: Supported

[samsc]

yes.

im not sure what mix sizes the triple heads support-

the menu to hold these values is already unwieldy really

[samsc]

one of these displays is at 60hz, the other at 75Hz - and this is at 1024x768x 3
this causes problems-

and total confusion -

6 x 1280x1024

Hardware Overview:
Model Name: Mac Pro
Model Identifier: MacPro3,1
Processor Name: Quad-Core Intel Xeon
Processor Speed: 3 GHz
Number Of Processors: 2
Total Number Of Cores: 8
L2 Cache (per processor): 12 MB
Memory: 6 GB
Bus Speed: 1.6 GHz
Boot ROM Version: MP31.006C.B05
SMC Version: 1.25f4
Serial Number:


Graphics/Displays:
NVIDIA GeForce 8800 GT:
Chipset Model: NVIDIA GeForce 8800 GT
Type: Display
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 512 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0602
Revision ID: 0x00a2
ROM Revision: 3233
Displays:
Display:
Resolution: 3072 x 768 @ 75 Hz
Depth: 32-bit Color
Core Image: Hardware Accelerated
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Rotation: Supported
Display:
Resolution: 3072 x 768 @ 60 Hz
Depth: 32-bit Color
Core Image: Hardware Accelerated
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Rotation: Supported

[emilianomorgia]

one of these displays is at 60hz, the other at 75Hz - and this is at 1024x768x 3
this causes problems-

and total confusion -

Wait that was the setup I was using , But that machine allow to use 6 x 1280x1024