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
    2020-02-10T19:03:41+00:00

    All right, sorry, haven't responded as this should be trivially easy to reproduce at Microsoft.

    I'm running version 26.20.100.7641 of Intel's Iris Plus graphics driver. As this apparently impacts SL3 and SP7 I would expect someone can reproduce this in house at Microsoft and take it from there.

    -Jan

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  2. Anonymous
    2020-02-10T18:15:06+00:00

    Hi, Jan Olbrecht!

    We have not heard from you since February 7. We sent you a private message and I hope you will be able to respond.

    Thanks for your time!

    Regards,

    Janette_Z

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  3. Anonymous
    2020-02-07T19:18:49+00:00

    Hi, Barb Bowman!

    Since the diag report is lengthy. This is to avoid flooding up a space in this thread. We need the notepad file and submit it to our internal team.

    Thank you!

    Respectfully,

    Janette_Z

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  4. 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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  5. 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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