I hope this is the right place to ask a question (first time) I have been using my view-sonic VA2626 off my 3 year old mackbook 13 as a base station and using my Mackbook Pro 13 just over a year old as my mobile computer. My son would like my older mackbook so I decided to use my mackbook pro for both stationary desktop and mobile use. I can't get the view-sonic monitor to work on my new pro however. The only things that come up on the monitor is the desktop/screensaver...