Display Manager Problem with external monitor via DVI

[PaulO]

I have an X200 with docking station that I had been using with an older LCD via VGA analogue out. I just purchased a 24" Viewsonic VX2450, with 1920 x 1080 resolution. I am connecting it from the docking station Displayport output using a Displayport to DVI connector. The ViewSonic has DVI and VGA inputs.

I am trying to set up display setting using the presentation/display manager (Fn + F7). When I try to create a setting with only the external DVI monitor, or, if I try to create an extended display setting with the Viewsonic as the primary monitor, I get the same error message:

"The following setting you have selected cannot be applied properly. Change the setting and try again. Notebook LCD. If you are using the enhanced USB port replicator, you must choose a display configuration with the notebook LCD as the primary monitor."

This leads me to think that the X200 somehow thinks that I am using a USB port replicator, versus the docking station. I never had any issues creating configurations like these with the VGA out and my old LCD. Any ideas on what the problem is and how to remedy it?

Thanks,

Paul

[Harryc]

Try changing displayport to be the primary display device in BIOS.