Weird Dual Montior Issue : both being identified as "1"

[choudhs]

I have got an dual monitor issue that has stumped everyone I have tried asking about so grateful for any new advice!

When I try hooking up 2 monitors to my video card (ATI Mobility Radeon 7500), both monitors display the same content. Instead of being an extension, the second monitor just duplicates what's on the first screen.

I've tried to change the display in the Setting tabs on the Display options but to no avail. The dual monitor icons are displayed and it does let me click on the second monitor icon and allows me to do both of the following :

Right-click and select "attached" to activate it
Or check the "Extend my Windows desktop onto this monitor"

However, after then clicking "Apply", and allowing the machine to accept the settings, the computer appears to be accepting the settings - but then just reverts back to duplicating the info from the first screen onto the second monitor.

When I bring up the Settings again to check what's happened the second monitor is again not active anymore. Even when I move the two monitor icons around, and then it ask me that it will activate the second monitor for me, and I reply yes, the problem still does not go away - and the settings revert back again.

I think the issue is that the computer thinks that both monitors are the same as when I press the Identify button both monitors are identified as "1".

I'm sure I am using the correct cable and connections, and a compatible graphics card - otherwise I would not be able to see the same info on both monitors - right ?!

Do I need to update my drivers ??!! Please somebody help!!!

[caperjack]

I have got an dual monitor issue that has stumped everyone I have tried asking about so grateful for any new advice!

When I try hooking up 2 monitors to my video card (ATI Mobility Radeon 7500), both monitors display the same content. Instead of being an extension, the second monitor just duplicates what's on the first screen.

I've tried to change the display in the Setting tabs on the Display options but to no avail. The dual monitor icons are displayed and it does let me click on the second monitor icon and allows me to do both of the following :

Right-click and select "attached" to activate it
Or check the "Extend my Windows desktop onto this monitor"

However, after then clicking "Apply", and allowing the machine to accept the settings, the computer appears to be accepting the settings - but then just reverts back to duplicating the info from the first screen onto the second monitor.

When I bring up the Settings again to check what's happened the second monitor is again not active anymore. Even when I move the two monitor icons around, and then it ask me that it will activate the second monitor for me, and I reply yes, the problem still does not go away - and the settings revert back again.

I think the issue is that the computer thinks that both monitors are the same as when I press the Identify button both monitors are identified as "1".

I'm sure I am using the correct cable and connections, and a compatible graphics card - otherwise I would not be able to see the same info on both monitors - right ?!

Do I need to update my drivers ??!! Please somebody help!!!

drive update might help ,what model video card do you have , you are connecting using 2 cables attached to the 2 outlets on the video card correct

[choudhs]

drive update might help ,what model video card do you have , you are connecting using 2 cables attached to the 2 outlets on the video card correct

I have an ATI Mobility Radeon 7500 video card...at least I think that is the model of the card :D

I am actually connecting two monitors to an IBM T41 laptop through a docking station. Both of the cables are analouge VGA. One of them is connected directly to the laptop and the other into the docking station (which has one VGA connection port and one DVI connection port)

I have tried using a VGA splitter box - thus connecting both cables to the splitter box and then the splitter box to the one VGA connection port on the docking station - but the problem still persists.

Thus I am now maybe thinking that I need to connect both monitors directly into the docking station - thus connect one of them into the DVI port using a DVI cable ??

[caperjack]

Thus I am now maybe thinking that I need to connect both monitors directly into the docking station - thus connect one of them into the DVI port using a DVI cable ??

that sounds more likely to be the way to do it !
I have never seen it tried or done this my self ,have had duel on a regular 2 port video card ,but not a laptop ,if you only have 2 vga cables you can buy an adapter to got from vga to dvi!

[choudhs]

Thanks CarJack!

I have now plugged in the other monitor directly into the docking station using a DVI cable & issue is now sorted.

Is as we thought...one has to connect both monitors directly into two different ports - otherwise if you try to split one of the ports then the computer will only recognise both monitors as one....as both are essentially connected to the one port!

Thanks for all your help man

[caperjack]

Thanks CarJack![ lol i havn't done any of that lately ]

Thanks for all your help man

Your welcome ,thought that was best way , good to here you got it working

[aaffeld]

I just installed a ATI FireGL V3400 128MB DDR3 PCI Express Dual DVI Video Card in my new Gateway DX Series desk top PC in order to run two monitors. Both monitors display the same thing. If I go to Control Panel (Display)only one monitor is shown. This is a Win 8 computer running in Win 7. How can I fix this? Allen