I have laptop dell lattitude e6510. It has nvidia 3100m display chip. System is Windows 7 x64 and I've installed the newest drivers from dell.
I can't run required configuration: work on 2 external monitors. One is DSub connected to laptop and the other is DVI connected through DisplyPort->DVI adapter. When I connect monitors like above I have desktop visible on laptop monitor and on DSub monitor. I can't change it to show on both external monitors. When I enter into "Screen resolutions" window I can't detect there the monitor connected through DP->DVI adapter. Adapter itself is running well as I tried to connect it to another dell laptop with different graphics card the monitor showed at once after connecting. This dell is precision m4500 with nvidia quadro fx 1800m.
What should I setup somewhere?