I am trying to resolve a situation using my 9350 and a Dell U2415 external monitor. When I plug in the external monitor after just a few minutes the external monitor will go black for a few seconds and then come back on. I have adjusted the energy saving time in the laptop to "two hours" when on ac mode. However the external monitor goes into power saving mode first and then the laptop screen. After a few seconds both screens do return to the image but it is very frustrating.