Surface Laptop 3 (Intel) issue with DP1.2 monitor after installing January 2020 updates

Anonymous
2020-02-01T12:22:04+00:00

Just a heads up and if someone from Microsoft sees this maybe talk to the Surface team:

After installing the January 2020 driver and firmware updates for Microsoft Surface Laptop 3 (Intel), my machine detected my external monitor (Dell U2715H) as 640x480.

The connection is made from SL3 -> Lenovo USB-C Dock Gen 2 -> Displayport to Mini Displayport on the Dell U2715h.

The problem went away after I disabled DP1.2 on the Dell Monitor and the screen was detected with its native resolution of 2560x1440 again.

I think this should be added to the known issues on this article if possible: https://support.microsoft.com/en-us/help/4526150/surface-laptop-3-update-history

Surface | Surface Laptop | Display and screen

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  1. Anonymous
    2020-02-06T14:22:12+00:00

    Hello!

    Im on driver: 26.20.100.7641, Surface Pro 7

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  2. Günter Born 49,461 Reputation points
    2020-02-06T23:56:58+00:00

    Also the snappy driver installer should work to install the old .msi driver

    https://borncity.com/win/2020/02/07/surface-pro-7-laptop-3-fix-for-640-x-480-mode-update-issue/

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  3. Anonymous
    2020-02-07T16:20:38+00:00

    Hi, everyone!

    Please go to this page to get the steps to Open and run DxDiag.exe

    Kindly save the file as Notepad.

    If any of you has the information, let me know so we can send you a private message for you to upload it.

    Regards,

    Janette_Z

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  4. Barb Bowman 80,810 Reputation points MVP Volunteer Moderator
    2020-02-07T16:36:06+00:00

    Why does this need to be via private message? There are lots of diag reports

    posted in the Windows Forum like

    https://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/dxdiag-not-showing-display/d8fa1289-d341-479f-a781-1d016526896d

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  5. Anonymous
    2020-02-07T19:02:39+00:00

    Can you also let us know what Windows OS Build you Surface is running. From Start, type and then run winver

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