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I purchased two new surface dock2 to connect our surface pro 7 to our widescreen monitors using usb-c cables. Neither of the monitors would connect through the usb-c ports.
One monitor is an LG 38WK95C. The other is a Dell ultrasharp U3818DW. The LG monitor previously worked connecting to a macbook pro through the usb-c port.
To be clear, I first connected the surface dock 2 to one of the surface pro 7 devices and connected the Dell to the surface dock 2 through the usb-c. A messages was displayed to the effect that the monitor should be connected through a displayport. The monitor never showed up in windows, although you would get the sound like a monitor was recognized and the displayport message. Using the "detect monitor" feature came back with "no monitor detected".
I then connected the LG to the other surface pro 7 device through the surface dock 2. The exact same behavior occurred.
Windows update showed no updates available. I then manually updated the firmware on one of the surface pro 7 devices. Still no joy.
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
I don't have much experience in technical terms but I would advice you a tricky thing. Instead of bothering with all of these things get the 1 or 2 monitors for checking that they are suitable for you or not (in connectivity). For a source I would suggest you check this url. They are offering some good monitors.
I have a similar issue.
I bought the surface dock 3 in June 2020. Everything has been working fine until I got a notificaion today "your surface has been updated - take a look at what's new" and now I cannot detect external monitors via the surface dock.
I can connect to external monitors directly via the USB C ports (Surface Go and Surface Book 2) and I can also connect via a Dell USB-C dock connected from my surface(s) to the dell dock then HDMI from there to the monitor. So a 50 quid Dell mini USB-C dock is doing a better job for my surface than the actual surface dock which is a lot more expensive. Very poor from Microsoft and I cannot see that they've piped up on here with any kind of fix.
On January 14th, 2021 I was happy ... Microsoft released an update and my two 27 inch USB C monitors on my Surface Dock 2 were recognized and controlled. Today Microssoft delivered a system update for my Surface and the monitors are not recognized again ...
That's interesting. I did notice yesterday my monitor seemed to be "waking up" without the usual forced wake up (changing the refresh hz) I had been doing. I have not applied any new updates and now I am a little hesitant to do so. Let us know if it starts working again!
Me as well I have a monitor but not working with the dell display manager. It only works if I connect the cable directly to my Surface Book. I purchased a UNI USB-C to display port cable the same thing.
