Enabling Hyper-V on Windows 10 adds new detected displays that do not physically exist

Question

I enabled Hyper-V on my HP Windows 10 Pro laptop today that has a 2nd monitor that is configured as an extended display (the laptop is #1, the external monitor is #2). As soon as I restarted the computer, I noticed that my monitors were now duplicated (showing the same desktop on both monitors).

When I went into the "Display Settings" screen, I noticed that there were several additional identified displays (3,4,5,6) that do not physically exist. I could no longer get back to my original display extended display configuration (#1 extended to #2), and could not get my physical monitors to be identified separately.

The "Multiple Displays" dropdown just showed various options for duplicating the screen across combinations of the 6 identified displays. Trying to manipulate the configuration seems to cause problems, and the system seemed to freeze for a little while, and then revert to the first duplicated configuration.

I tried just stopping the Hyper-v service, but that still didn't remove these "ghost" displays.

The only way that I got back to a properly configurable display detection was to completely disable Hyper-V.

So any ideas on what caused this? Are there any Hyper-V settings that can fix this?

Answer 1

This guy has a great tutorial that helped me fix this issue. It definitely has to do with the non PnP displays that show on the device manager.

Answer 2

I recently experienced this same issue after installing Hyper-V on my MSI laptop (Intel HD Graphics 5600).

After updating the driver to version 20.19.15.5058 the issue did not go away.

I then opened Display Settings (right click on the desktop):

• Then I selected the monitor called "1|3"
• Scrolled down to "Multiple displays" and changed the setting to "Show only on 1"

I basically had to repeat the above step, continuously selecting the monitor named 1|x until it there were no more monitors called 1|x.

Once that was done I was able to choose monitor "1" and select Extend Display on 1 and 2.

The additional monitors remain in the list but appear inactive.