D3100 display issues
 

Hi I have a dell precision m4800 with 2 gpu's an intel hd internal graphic card and a k2100 quadro dedicated gpu.

I would like to use the k2100 as default but when I connect to my d3100 docking it looks only the intel hd graphics is working with a max resolution of 1600 x 900.

Also I notice that I sometimes get a black screen on my external screen (it's only for a fraction of a second)