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
    2020-02-25T01:12:05+00:00

    I have a two month old Surface Pro 7 and the instructions did not help me.  External monitors were working great for two external Dell Monitors until the February update.   Since I did the Feb update I can't get even one external monitor to work. 

    In the display settings it will show two small monitors and if I select detect monitors I get an error in red "Didn't detect another display". 

    Extremely frustrating and I'm going on three weeks.  This is my work computer and has cost time and productivity. 

    The other thing that now happens is when I plug in the Surface Dock the computer, mouse, screen everything locks up for about 15 seconds. Then I hear the sound like something connected and it comes back to life.  All after the worthless February update.

    JD

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  2. Anonymous
    2020-02-25T02:43:17+00:00

    I have a workaround which works but is still unacceptable (come on MS - this can not be that hard to address)

    My work around is a USB-C to HDMI cable (thus avoiding the Surface Dock completely) - I can now use my monitor but whilst the resolution issue is fixed, the quality is not as good as Display Port.    

    So I can now work at work - but not impressed that MS has not acted on this yet.

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  3. Anonymous
    2020-02-25T13:25:19+00:00

    Yes, I have tried that as well and that doesn't work for me either.  What Display Adapter do you have?  MY Surface Pro 7 has the Intel Iris Plus Graphics and I have tried numerous driver versions.  My current driver version is 26.20.100.7641 dated 12/21/2019.

    It's strange because whenever I pug in external monitors I hear the sounds like it's connecting but an image never comes up.

    Thanks

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  4. Anonymous
    2020-02-25T15:15:27+00:00

    Your monitors probably don't support 640 x480. My monitor at home does, my two monitors at work don't.

    Yes, I have tried that as well and that doesn't work for me either.  What Display Adapter do you have?  MY Surface Pro 7 has the Intel Iris Plus Graphics and I have tried numerous driver versions.  My current driver version is 26.20.100.7641 dated 12/21/2019.

    It's strange because whenever I pug in external monitors I hear the sounds like it's connecting but an image never comes up.

    Thanks

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  5. Anonymous
    2020-03-02T07:02:27+00:00

    Any updates??  It has been a month that this problem has been reported.

    Should I be returning the laptop soon since the return policy is almost up?

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