09-13-2016 12:38 PM
I am trying to use an external display connected via DisplayPort in Windows 10.
The display reports no signal.
The Settings application lists only the built-in display. After I press "Detect" it recognizes that there is another display but it's "not detected".
09-14-2016 04:29 AM
I investigated further and it is clear that this is a Windows driver issue.
First I tried booting a Linux live environment and the external display was immediately recognized and used.
Then I went into BIOS setup and set the external digital display as start-up screen. The external display worked fine and displayed the first part of the boot sequence: the Lenovo splash screen and the new trapezoidal Windows logo.
After the display drivers were loaded and Windows started showing the spinning points loading sequence the external display lost signal.