Windows 10: Windows 11 constantly sets 3rd monitor to "Disconnect this display" and believes it "Isn't...

Hi guys, I have a home system configured with a Windows 11 Dell Latitude 5430, running Windows 10.0.22621 Build 22621. The device is connected to a dock by Plugable via a USB-C cable. The dock then outputs a dual display to a KVM switch via 2 HDMI cables. The KVM switch supports up to 4k display, but using standard 1080p also has a desktop PC connected to it via 2 HDMI cables. The switch outputs to 2 Dell monitors. When I run my PC, this has no issues displaying to the two monitors. However, when I run the laptop and attempt to display to both monitors, Windows 11 randomly decides that my se

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no sound after connection dell monitor through hdmi

Thanks for the response. I have done it already as you suggested and now all OK.

 

Windows 10 not detecting 3rd monitor

If following the steps provided on the previous response did not work, let's try another workaround. Follow the steps below to change display settings:

• Go to Settings.
• Click System.
• On the left-panel, choose Display.
• All three screens should be displayed there, but you may see that one is disconnected.
• Click on the screen that is disconnected or just a dark display and choose
  Extend desktop to this display option.

After doing so, you should be able to see all three displays.

Update us with the result.

 

External monitor display settings

Hi,



Thank you for posting in Microsoft Community.



I understand that you are facing issues with the display scaling on your external displays. We will certainly look into this for you.

As you are using Vizio TV, you may have to try using custom resolution settings if the in-built settings do not provide the required settings.

For better clarity, please let us know:

• What is the version of Windows 10 that is currently installed on your computer? You can click on Search and type
  winver.
• Are you aware of any recent changes to the system, such as updates, after which you are facing this issue?
• What is the make and model of your computer?

Meanwhile, I would suggest you to check the steps mentioned in the Workaround section in

Windows scaling issues for high-DPI devices

I would also suggest you to check the Display drivers. Please refer

Troubleshoot external monitor connections in Windows 10

Set up dual monitors on Windows 10



Let us know how it goes.

Regards,

Vivian S