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

Anonymous

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

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Anonymous

2020-07-09T00:20:38+00:00

The USB-C to Display Port 1.4 HBR3 cable fixed the problem.

Intel did come out with 2 additional versions of the Iris Plus Graphics card:

* 27.20.100.8336 <- I tested this one but it failed

* 27.20.100.8425 <- I have not tested this one

My setup:

Surface Laptop 3 with Microsoft docking station (latest firmware)

Windows 10 2004

Samsung LC49RG90SSEXXY
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Anonymous

2020-07-11T10:25:23+00:00

same here got Samsung 49 Monitor.

Resolution only 640*480

Driver 25.20.100.7101 not available.

Surface pro 7 high end version...... Spend 2700 Bucks + 800 Bucks for monitor.

Try all updates but no changes....
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Anonymous

2020-07-11T15:20:19+00:00

I don't know what happened, but suddenly my Surface Laptop 3 has been fixed. USB C to HDMI/DVI cable. And USB C to HDMI/HDMI.
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