Windows 10: Microsoft 4K Wireless Display Adapter not showing correct resolution

I am running a Surface Pro 4 with Windows 10 v. 20H2, OS build 19042.608.

I just bought the Microsoft 4K Wireless Display Adapter Model 1942.

It says it supports a resolution up to "Max video resolution 3840 x 2160 @30fps".

My screen is 3440x1440 Acer CB342CK but when I connect to the adaptor it only connects at 1920x1080 at the image looks all washed out. That is the highest resolution that seems to be available. I have checked the Wireless Display Adapter App and it seems that I have the latest firmware installed Firmware version: 3.9520.26. I've checked everything I can, and nothing seems to be a fix.


Any thoughts?

:)

 

Microsoft wireless display adapter with Lenovo Yoga

Hi,

I realize the inconvenience you are facing with Microsoft wireless display adapter. I will certainly help you.

I suggest you to run windows Hardware and Devices troubleshooter to fix the issue.

Kindly follow the below steps to run Windows Update troubleshooter:

• Search for Troubleshooting in Windows search box, and open it.
• Select view all in the left pane of troubleshooting Window.
• Click on Hardware and Devices, and follow the on-screen instructions.

Please reach back to us, if you face difficulty with
Microsoft wireless display adapter. We will be happy to help.

Thank you.

 

Display problems with the Microsoft Wireless Display Adapter

Hi,

It is possible that you are experiencing an audio and video streaming issues due to a corrupted or an outdated display driver. To isolate your issue, we'd like to gather more information:

• Have you made any recent changes prior to this issue?
• Could you tell us the exact error message you received?
• Have you tried updating your display drivers?
• Does this happen only when you're streaming a video?
• What troubleshooting steps have you done so far?

Meanwhile, we suggest that you follow the steps in this
article on how to troubleshoot Wireless Display Adapters. You may expand each section that best describes your situation and check if the issue still persists.

Let us know if you need further assistance.