Samsung R87 - Trouble connecting to PC as a 2nd monitor

[Mummraah]

I just purchased a Samsung R87 and I'm having some difficulty getting it hooked up to my PC to use as a second monitor.

I have a Geforce 7900 graphics card with dual display, DVI-I dual link, my primary monitor is a 19" TFT that is connected with a DVI cable.

I am trying to connect my R87 with a VGA cable and a DVI/VGA adaptor, my PC is recognising the Samsung as a display but I am not getting any picture.

When I change the source on the Samsung to PC it goes into standby after a couple of seconds.

I've been playing about with various resolutions and frequencies but to no avail, any help or advice would be greatly appreciated.

Thanks

 

[Mummraah]

Sods law, as I was writing this post I was fiddling with the settings and lo and behold it decided to work, tbh I can't see why it wasn't working before as I didn't do anything differently. The only prob now is, I get screen tearing on my TFT when I run it in dualview but its bearable.

 

[Icm76]

I get screen tearing on my TFT when I run it in dualview but its bearable.

make sure the vertical sync setting is set to on & see if you still get the tearing

 

[Mummraah]

The problem continues, I got up this morning and decided to check that my Samsung was still connected as a 2nd monitor and guess what happened....

Changed the source to PC and it went to standby again!!

I have not changed any settings, so don't know why it would do this, please help as this is driving me insane!

Thanks