[AG-TECH] solution - video only shows on primary display

Deb Agarwal DAAgarwal at lbl.gov
Mon Apr 22 18:45:40 CDT 2002

I had the same problem when I upgraded my matrox card.  In order to get it to
treat your displays on the 450 or 550 card as separate displays you need
to reinstall the drivers from scratch.  Below are the instructions from matrox.

-------------Here is the question I sent them ----------------------------
I have a new G550 and two matching monitors hooked up to it but I can't get the 
monitors to show up as 2 separate screens instead of one. When I go into advanced 
display properties and click on dualhead, my only options are whether to use dual 
head and where the second monitor is located. I am running win2k and loaded the 
latest 5.72 driver from your web page. Any help would be appreciated. I am really 
tired of every window coming up on the bezels between the two monitors.

-----------Here is their answer and this worked fine-----------------------------

First, uninstall the drivers through add/remove programs.
Reboot, and allow Windows to detect the card. Let it search for a driver, and when it 
doesn't find one, select disable.
Then install the latest drivers. You will click next, then it will say Millennium 
G400/Millennium G450/Millennium G550 (depending on the card you are using), hit next.
Now on the screen will be a question with a chck box. It says, Add extra dual head 
multi display options
Check this option and you will be given the oputunity to have 2 monitors running at 
different resolutions. Once the drivers have been installed, you will need to reboot.
As soon as you finish booting, if you have 2 monitors connected, it will say it has 
detected a secondary monitor. It will ask if you want to enable it now using same 
resolutions on each display(virtual desktop) or seperate resolutions.
You will then be prompted to reboot once more.
This time when you come up, if you go into the settings tab of the display 
properties, you will see 2 monitors and will be able to set each monitor to a 
different resolution.

---------------original message---------------------------------------
Allan Spale wrote:

> Chris,
> That is one of the things that I do not like about the display setup for
> the G450.  It seems to treat two displays as one logical display.  If you
> find a workaround for this (where each individual display appears as
> itself in Display Properties), please let me know.
> Allan
> EVL at UIC
> node-op
> On Mon, 22 Apr 2002, Osland, CD (Chris)  wrote:
>>Oh - another piece of info.  While the G200 shows up as
>>multiple screens under the Advanced tab, at least for me the
>>G450 showed as a single screen that you could set up as 2048
>>(or more) wide.  The net result is much the same (the first
>>1024 pixel columns come out of the first socket, the next out
>>of the second) but it looks different in the software.
>>Chris Osland                         Office tel: +44 (0) 1235 446565
>>Digital Media and Access Grid      Medialab tel: +44 (0) 1235 446459
>>BIT Department             Access Grid room tel: +44 (0) 1235 445666
>>e-mail:   C.D.Osland at rl.ac.uk               Fax: +44 (0) 1235 445597
>>CLRC Rutherford Appleton Laboratory (Bldg. R18)
>>Chilton, DIDCOT, Oxon OX11 0QX, UK
>>[The contents of this email are confidential and
>>are for the use of the intended recipient only.
>>If you are not the intended recipient do not take
>>any action on it or show it to anyone else,
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>>-----Original Message-----
>>From: Allan Spale [mailto:aspale at evl.uic.edu]
>>Sent: 22 April 2002 15:59
>>To: Stewart Macneill
>>Cc: ag-tech at mcs.anl.gov
>>Subject: Re: [AG-TECH] video only shows on primary display
>>As a future reference, though this probably will not apply in your case
>>since your video card is not recognized, but always make sure to have the
>>same color depth selected for all your displays.  Otherwise, video will
>>show up fine in one display, and then disappear in another display.
>>One thing to make sure of is that multiple displays are enabled.  This can
>>be done by opening up Display Properties and pressing the Advanced button.
>>A Matrox dialog will appear.  Press the DualHead tab and select the option
>>DualHead Multi-Display.  Even though you may have already done this, it is
>>possible that one of the sections of the Matrox dialog will be of use.
>>EVL uses two Matrox G450 cards (one AGP and one PCI) on our display
>>machine. We used to have one G200, but after Windows 2000 we noticed
>>performance hit (probably related to the driver), so we switched to our
>>current setup. 
>>I hope this information helps you come up with ideas for how to have your
>>displays work properly.
>>EVL at UIC
>>On Mon, 22 Apr 2002, Stewart Macneill wrote:
>>>Hi all
>>>Just in the process of coaxing our node into life.  I've got the standard
>>>G450 AGP and G200 PCI configuration set up on a dual CPU IBM
>>>but have a problem in that the video from my cameras only shows up in the
>>>primary display.  
>>>It doesn't seem to matter whether the primary display is set to the LCD
>>>monitor or a projector, PCI or AGP, as soon as I drag the Vic window onto
>>>one of the other displays, the feed is lost - if I minimize and restore
>>>the window just picks up whatever is behind it.  If I move it back into
>>>primary display, I see the video again.
>>>The only two oddities I have noticed are that W2K Advanced Server (display
>>>machine) only reports one of the G450 heads in the Matrox window control
>>>panel,  and the capture computer (also a dual CPU IntelliStation, Red Hat
>>>7.2) reports that it can't find a monitor list and is using the 'main'
>>>display.  I don't know if that is at all significant.
>>>Has anyone come across this problem?    I had a search through the AG-Tech
>>>archives, but didn't find anything.
>>>Thanks for any suggestions.
>>>Stewart D Macneill
>>>NeSC Systems Manager (Glasgow)
>>>University of Glasgow
>>>Dept of Computing Science
>>>17 Lilybank Gardens
>>>G12 8RZ
>>>Tel:  0141 330 3102 (direct)
>>>Fax: 0141 330 4913
>>>email: macneisd at dcs.gla.ac.uk <mailto:macneisd at dcs.gla.ac.uk>

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