I am trying to get a triple monitor setup running on my Dell 9100. I read up on the previous posts and got 2 graphics cards from the same manufacturer. One is a Sapphire Radeon HD 3650 with dual DV ouputs running in the PCI-E x16 slot. The second is a Sapphire 7000 / 7000 VE with a DVI and VGA connection. I have 3 Dell 2405 FPW monitors. The Sapphire HD 3650 replaced the ATI video card that came standard on the Dell 9100.
I installed the 3650 and installed the latest drivers from Sapphire. The card works and I can get the dual monitors working just fine. Works just like the previous Dell card when one monitor was on DVI and the other on VGA.
I shutdown and installed the 7000 card. The dual monitors loaded and I logged in. After logging in got the prompt about finding new hardware. Just allowed the system to run until it told me to reboot. I rebooted.
When the system rebooted only the 3rd monitor works. The monitor on the 7000 card is the only one that responds. The dual displays on the 3650 are black. System properties only shows one monitor available.
I shutdown, removed the 7000 card, and rebooted. After login I had to reinstall the drivers to get the 3650 to work in dual monitor mode. I can only get this to work with 2 monitors on a single card. I can't get monitors to work across 2 cards.
What am I doing wrong... help... Attaching the outpu from dxdiag