Hi, I have a brand new 2015 Retnina 15 with dGPU. It works fine except when I connection monitors to the display ports when I bring the unit to work. Usually the unit in sleep with the lid closed. I insert the mini-dp cables for the monitors and the power and USB for keyboard/mouse. Most of the time the two monitors do not come up. And then when I open the lid the retina display stays black. When this happens If I can disconnect the monitors and plug them back in one at a time, waiting 5 sec in between to get monitors up. But sometimes the retrina display does not wake and I have to crash the machine by holding the power button down for 10 seconds or so. I have ruled out the monitors by trying it on my 2-24 Dells at home. Same issues. Any thoughts on what I am doing wrong?