Matrox DTH2G with 3 x 2407 Dell monitors

sriraman1609 · Post by **sriraman1609** » 15 Aug 2008, 16:54

Hi!

I have a quad core 3.6 Ghz with 4 Gb Ram , 3 x Nvidia 8800 GTX running on SLi. I am running Windows Vista 32 bit version on it. My aim is to make three 24 " Dell monitors look like one big screen and so I bought the matrox DTH2G. Unfortunately, It detects my monitors, but does not receive or send any signals. I thought my matrox was faulty and tried it with 19" monitors and they work. Even though, I am running them on lower resolutions then their native. I am not sure if I am following the correct steps. Can somebody help me with this?

I am trying to build a flight simulator. I actually have a motion based chair with it. I am using MS FXS for this purpose.

Thanks,
Ram

Post by **Paddy the Wak** » 18 Aug 2008, 20:09

Hello ... welcome to the forum ... 8)

Help us help you ... :wink:

Exactly what res are you tying to run on your 24" monitors?
What res worked on your 19" monitors ?
Have you applied the firmware update ? ... found here if you haven't ... http://www.matrox.com/graphics/en/support/gxm/windows/th2go/digital/howto1/
You say it detects your monitors but does not receive or send any signals ... What detects your monitors ?

Also ... Read this thread (if you haven't) ... it may help ... http://www.widescreengamingforum.com/forum/viewtopic.php?t=14213

Post by **Mach1.9pants** » 18 Aug 2008, 23:14

Shouldn't be a problem I am running 1 2407 (centre) and 2 cheaper E2408s on the side at 5040x1050, no probs
M1.9P

sriraman1609 · Post by **sriraman1609** » 19 Aug 2008, 01:32

1) The 19" worked perfectly at native rsolution 1280 x 1024.

2)I would like the 24" to work at the maximum possible resolution.

3) My GXM console detects my monitor, but also say there is no DDC communication. I printed the screen.

http://picasaweb.google.com/sriraman1609/MatroxGXM

4) I have the latest firm ware.

5) The LED behind the Matrox device is RED.

Hope this can give you a better understanding of my situation. Pardon me, its the first time using a forum.

Thanks
Ram

Post by **Mach1.9pants** » 19 Aug 2008, 02:19

That image is showing that only one (the right monitor) is connected to the TH2GO. As a first thing I would check all the cables are connected properly

Post by **Paddy the Wak** » 19 Aug 2008, 09:56

Hello ... sriraman ....

The image you posted suggests that two of your monitors aren't connected ...
Also ... you say you have the latest firmware but the screenshot you posted suggests you do not ...
It maybe that it is just the software that is not up to date.

Here is YOUR screenshot ... note the GMX software version ... 2.1.0.5 ... this is an older version.
And the GMX setup isn't detecting your graphics card.

My GMX setup ... note the GMX software version ... GMX software version ... 2.3.2.8 and it can see my Video card.

(Click these images to see them full size)

So ... there are two things you need to do in order for us to help you move forward ...

1) ...
I posted a link to the new Firmware in my first post ...
Here it is again ... please follow it .... it explains exactly what you have to do to get your Firmware (and PowerDesk) up to date ... http://www.matrox.com/graphics/en/support/gxm/windows/th2go/digital/howto1/

2) ...
Please do this and tell me what it says ... or take another screenhot ...

Go to the nVidia Control Panel ... choose ... Help ... System Information ...
On the ... Display ... tab ... What does it say about the Graphics Card Information ?

sriraman1609 · Post by **sriraman1609** » 19 Aug 2008, 17:55

1) Intitially I wanted to run three 30" monitors. I bought those and they wouldn't work. So came down to 24", I didn want to buy all 3 and later realise they don't work either. SO I want one to work and I will buy the rest immdiately. I still have the 30" with me and I spent loads on that.

well back to the subject..

2) My mistake, I did not change the software completely. I have changed it now. but it still gives me the same error.

3) The link below is a screen shot of my display.

http://picasaweb.google.com/sriraman1609/MatroxGXM/photo#5236263506379561042

Thanks,
sriraman

Post by **Paddy the Wak** » 19 Aug 2008, 18:05

Hmmm ...
Your screenshot looks right to me ...
Which GPU is the TH linked to ? ... the top one ... ?
What about if you try turning off SLi ... just to see what happens ?

sriraman1609 · Post by **sriraman1609** » 19 Aug 2008, 18:27

1) The matrox is conncted to my 3rd GPU , the display properties driver
http://picasaweb.google.com/sriraman1609/MatroxGXM/photo#5236272982264651906

2) Currently I have disabled the SLI, because I can run only 1 monitor on SLI.

3) My display drivers are upto date.

Post by **Paddy the Wak** » 19 Aug 2008, 18:33

As far as I'm aware ... your monitor should be connected to the top card (the first card) when in SLi (even if you don't use a TH2G) and usually the TH2G is connected to the top card too ...
Could you give that a go ...

sriraman1609 · Post by **sriraman1609** » 19 Aug 2008, 18:55

I have connected the matrox and the other monitor to the first GPU. There seems to be no difference.

I randomly took a screen shot of my desktop, it was surprising

http://picasaweb.google.com/sriraman1609/MatroxGXM/photo#5236280748846532818

I have only my 19" additional monitor rendering an image, but the screen shots shows 3 monitors.

Post by **Paddy the Wak** » 19 Aug 2008, 19:27

Very odd ...

Your Display Properties should look like this ... note the Display: ...
Matrox Triplehead2Go Digital Edition on NVIDIA ... etc.

It seems that you do not have the Matrox display driver installed (or it isn't installed correctly)

Try this ...
Go to ... Display Properties ... Settings ...
Click the "Advanced" button ...
Click the "Monitor" tab ...
Click the "Properties" button ...
Click .the "Update Driver" button ...
Choose ... Not at this time ... next ...
Choose ... "Install from a specific location" ...
Choose ... "Don't search. I will choose the driver to install"
Click ... "Have Disk" ...
Browse/navigate to your PowerDesk install directory ... usually ... C:Program FilesMatrox Graphics IncPowerDesk SE
Highlight the file ... GXM.inf
Click ... Open
You may get a pop up asking if you trust Matrox ... if you do ... answer ... yes.

This should install the Matrox display drivers and once you have re-booted the computer you should be able to choose TripleHead resolutions.

Let me know how you get on ... 8)

sriraman1609 · Post by **sriraman1609** » 19 Aug 2008, 20:48

1) I followed all the steps. It did not work. SOme how the matrox is detected as a default monitor.

http://picasaweb.google.com/sriraman1609/MatroxGXM/photo#5236310136346389378

http://picasaweb.google.com/sriraman1609/MatroxGXM/photo#5236310140127177874

http://picasaweb.google.com/sriraman1609/MatroxGXM/photo#5236310144915586658

It doesn't detect Matrox.

Post by **Paddy the Wak** » 19 Aug 2008, 20:57

This screen suggests you are letting it search for better drivers ... http://picasaweb.google.com/sriraman1609/MatroxGXM/photo#5236310144915586658
You need to tell it where they are ... double check these steps ...

Choose ... "Don't search. I will choose the driver to install"
Click ... "Have Disk" ...
Browse/navigate to your PowerDesk install directory ... usually ... C:Program FilesMatrox Graphics IncPowerDesk SE
Highlight the file ... GXM.inf
Click ... Open

sriraman1609 · Post by **sriraman1609** » 20 Aug 2008, 17:53

I have installed the driver. Now the default monitor is detected as a matrox TH2Go. But the Matrox still does not detect my graphics cards. Do you think vista would be better?

Post by **Paddy the Wak** » 20 Aug 2008, 18:18

Hang on ! ... I missed that you said you were on XP ...
As far as I am aware 3 x SLi only works with Vista and does not work with XP ... try removing the bottom card.

I would not recommend Vista to anyone ... but others think it is OK.

sriraman1609 · Post by **sriraman1609** » 20 Aug 2008, 19:24

Oh!!! :shock: I didn't know that. My system is water cooled!! I am to good at at ripping things apart.

Post by **Paddy the Wak** » 20 Aug 2008, 19:44

So is your problem solved if you just use 2 video cards in SLi in XP ?

sriraman1609 · Post by **sriraman1609** » 21 Aug 2008, 21:28

I am still trying to remove the other graphics card. :( Its too comlicated for me..

Post by **Mach1.9pants** » 22 Aug 2008, 10:30

You could disable one of the graphics cards in XP. Then run the other 2 SLI or disable 2 and just run 1...there is something wrong with your set up, ande I think it could be easily solved. However it is hard to do that with out the PC in front of me!
Give Matrox a call on the phone and they can remote control your PC to find out the prob. They did it for me and were really helpful :)

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