I have a 1TB i7 Surface Book on a dock with two additional monitors. I see many posts about a black screen after sleeping, but folks still see the mouse. This behavior is a bit different. After the monitors time out, and only occasionally, when I move the mouse, the external monitors light up, but the SB screen stays black. It's still there, in the configuration, but it's black. I do not see the mouse pointer on it, but when dragging windows, etc. you can tell the monitor is still there, you just can't see anything on it. Almost as if it's just the backlight that doesn't come back on. The touchscreen is active. (If I touch the screen, the mouse pointer disappears from the external monitor view.) If I close the surface and wait for the OS to reconfigure the displays and then re-open the SB, I get the screen back after the OS does it's re-reconfiguration. Any thoughts on how to correct this issue?