Windows 10: Surface Pro 7 i7 16 GB Windows 10 Up-to-date. two external monitors duplicate but do not...

I recently updated my Surface Pro 4 with a Version 7, Updated everything including Docking Station. I have used two external large monitors for years with the Surface Pro 4 Display options for "Extend Desktop to 2 and 3"; Yesterday, the displays were not extended to my external displays 2 and 3 but duplicated. Both displays 2 and 3 are connected and function fine through the "Extend desktop to this display" option available in "Multiple Displays", Display, Settings through the normal Windows control panel. The "Project" screen for display options also shows selection of "Extend". The 3rd display is not shown in the "Rearrange your displays" screen and shows "2/3" as duplicated. This screen normally showed the Surface Internal screen as Display 1, Samsung LU28R55 as Display 2, and the second Samsung LU28R55 as display 3. That is the way I have had it for years with a Surface Pro 4 and my new Surface Pro 7 now--well until yesterday.


So what is going on gurus? I don't have time for this unpredictability.


All up to date on Windows and drivers.

Restarted serval times.

Cleared Cache in Reg.

:)

 

When "Duplicate these Displays" is selected, external monitor displays upside down, but not the Surface Pro screen

After Windows 10 updates were automatically installed last night, my LG external monitor displays upside down when "Duplicate these displays" is selected under Display settings. With other options (Extend these displays, or Show only on 1, or Show only
on 2) the external monitor shows the correct orientation. PC is Surface Pro 3 with Windows 10 Pro operating system. LG monitor is 34UM95-p 34" Ultrawide IPS Monitor. Ctrl-Alt-Up or -Down do not work. Drivers are up to date. Thanks in advance
for help/suggestions.

 

Windows 10 Anniversary Update - No External Monitor

I have a Surface Pro 4 and a Surface Pro 3, and I use the Surface dock cable to connect both to peripherals including an external monitor. After installing the Windows 10 Anniversary Update, I cannot duplicate or extend to the external monitor. It does
not appear in the display options at all. I have tried deep reboot, restart, updating drivers (although the monitor does not appear in the list in device manager so I can't update its driver), and checked all cables. The external monitor blinks and shows that
there is a display (i.e. it does not go to sleep) but never shows the display image. It is very frustrating.

 

2 External monitors - 1 to extend and 1 to duplicate

Hello,

Does anyone know of a way to connect two external monitors to a Surface Pro 4 and have one monitor be duplicating the surface screen and the other monitor extending that screen?

Thanks for the help!