EDIT: I downloaded and ran the Surface Diagnostic Toolkit that MS provides and it appears to have fixed the problem. When ever my SB2 15 inch wakes up from hibernation or reboots my graphics card disappears from the list in the device manager and all programs default to the lintel graphics. separating from the dock and reattaching fixes the problem until the computer goes into hibernation or needs to be restarted. If it helps windows makes the hardware disconnect sound when it wakes back up from hibernation. Does anybody know where to start looking to potentially fix this problem? I'm at a complete loss. I'm backing up now to do a factory reset to see if it's on the software side.