Surface Dock keeps waking up external monitor

Hi all

Just an FYI, I tried a miniDP to HDMI cable but that did not work with my Ultrawide 27"LG  monitor. The Surface Dock displayed a blank screen. Waste of money buying a new cable.

Thanks

I'm a bit surprised at the lack of a response here; we have a considerable number of people in this thread all reporting the same issue. I (and others) have stated that my dock and Surface are both up to date and yet, I still see Microsoft staff asking if that has been done.

If one of the Microsoft employees who has chimed in here would like provide further debugging, I'm happy to try it. Otherwise, I believe we've exhausted the debugging checklist (update Surface & Dock), and this needs to be sent to a engineer to be further investigated.

Hi,

We would like to know more info about your concern. Can you confirm the following information:

• When and where did you purchase your Surface dock?
• Have you tried to visit the store where you purchase your Surface Dock so that the store staffs can check it?

Regards.

Erwin,

I know I'm not who you directed you reply at, but I felt that a response was warranted anyway given Microsoft's current handling of this situation.

My Surface Dock was purchased on 4/26/2016 from Amazon (sold by Amazon.com, LLC, not a marketplace seller).

I have not visited a Microsoft store with this issue. I did visit an Microsoft store around 6 months ago to have them look at a different monitor-related issue. After they worked on it for over an hour, they were unable to fix it and replaced my SP3 with an SP4 at their expense to resolve the issue. While I appreciate that they made it right for me, I have not been terribly impressed with their troubleshooting skills.

Hi Eric,

Let's get this sorted out by checking if you've already followed all the steps provided on this link. If yes, we suggest that you update your Surface Dock.

Let us know how it goes.

Regards.

I have exactly the same problem, ie monitor doesn't go to sleep.

Note that I have this issue with mini-dp->hdmi cables! This occurs also with only one screen connected to the dock. 

Pretty baffled by this issue, and even more by the fact that no one seems to care...

Hi Erwin,

I bought the dock in Europe from Expansys, which is a online store. There was no problem with the dock ever, except this monitor stand by thing. Since it's an online store, I can't visit them. Surely I could send back the dock, but it would take 2 weeks at least, and I use it for my work, so I have to be sure that this is a hardware problem and it will go away if they replace my piece.

I one more thing, to SandeepLiveCa and everyone else! If I connect a monitor with a miniDP-(HDMI or VGA or anything else) converter the monitor and the dock works fine. But since I use a 4K monitor and I need the 60Hz refresh rate, I must use the miniDP-DP cable since over HDMI I couldn't use the 60Hz refresh rate! So if I use a monitor with lower resolution, or 30Hz refresh rate is enough for you in 4K than the miniDP-HDMI cable is a good choice, it'll work fine!

Erwin! At Microsoft, did you ever tried to connect a Surface Pro 4 to the docking brick, connect the brick to a 4K (!) monitor with 60Hz refresh rate over a miniDP-DP cable and let the Surface down to sleep mode? It's a really easy experiment, I think you should try it!