Quick setup that I have in my small office: 4 Surface Pro 3 with the original SP3 docking stations all connected to external monitors - all work perfectly fine 1 Surface Pro 3 with an SP4 docking station connected to (2) monitors by a Mini DisplayPort Active Adapter to a DVI cable - User shuts it off each night but when she doesn't, the displays won't come back on until I fiddle with the unit between undock/redock and restarts 7 Surface Pro 4 with SP4 docking stations all connected to external monitors. All with Mini DisplayPort to DisplayPort cables. All have the same problem. After the screens go black and sit for a bit, the only way to get the external screens up is to undock and redock the tablet. All units are set to not go to sleep when plugged in and all are completely up to date but I still have the problem with having to undock/redock to get the monitors to kick in. 2 of the SP4's get a bit more wonky as they give fits to the process and I mostly have to restart them to get them to come back up. Is there something I am missing with this? My SP3's on the original dock all work fine with no problems. It is only units on the new SP4 dock and it is annoying. Thanks.