Surface Dock keeps waking up external monitor

Anonymous
2016-07-10T11:30:09+00:00

My monitor (LG 29UM68) is connected to Surface Dock -> SP4, via direct miniDisplayPort.

It keeps entering sleep mode and waking up repeatedly, even though my SP4 is asleep. This does not happen when I connect the monitor to SP4 directly.

Another issue is that if I set to PC Screen Only, after few seconds, it will automatically switch back to external monitor only. Again, this does not happen if I connect monitor to SP4 directly.

These 2 issues only arise if I use Surface Dock.

I have gone through all the steps here (https://www.microsoft.com/surface/en-sg/support/hardware-and-drivers/troubleshoot-docking-station-surface-dock) successfully, but issue persist.

Please help.

Surface | Accessories | Surface Dock

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  1. Anonymous
    2017-02-19T20:37:35+00:00

    You've heard correctly.

    I have two of the most recent LG Ultrawides. One is connected via mini-DP to HDMI adapter/cable. The other is connect by mini-DP to DP cable. When I put the Surface to sleep or let it shut off the displays after going idle, the HDMI-connected monitor sleeps fine, but the DP monitor cycles in and out of power saving mode.

    If I connect the DP monitor to the Surface, it goes to sleep fine and has no issues.

    If I actually shut down the PC, they also sleep fine.

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  2. Anonymous
    2017-02-22T16:39:00+00:00

    Same problem here!

    LG 27" 4K monitor plugged into the Srurface dock (the new one, the little brick) with a miniDP-DP cable. If there's no Surface connected to the dock, the monitor goes into standby fine. If I connect any Surface to the dock the monitor works fine. If the Surface goes into standby the monitor also turns off, but the dock wakes it up immediately. Then the monitor turns off again, and the dock wakes it up, and this cycle goes for ever!

    It's definitely not a Surface or Windows problem, If I connect the miniDP-DP cable directly into the Surface and it goes into sleep, the monitor turn off just fine. It's not a monitor problem, the monitor works fine with other computers and docking stations.

    It's definitely a docking problem. I updated the firmware with the Surface Pro Dock Updater to the latest version, and every Windows updates are installed.

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  3. Anonymous
    2017-02-23T00:46:50+00:00

    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.

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  4. Anonymous
    2017-02-23T02:10:45+00:00

    Hello Erwin

    You have no clue what this discussion is about. So I would make a polite request for you to spend 30 minutes to read the complete thread before responding. Otherwise, you also have the option to not respond. You are wasting our time.

    BTW, good job! Thanks to those who figured out that the issue is only with DP firmware and not with HDMI firmware. I have ordered a mini-DP to HDMI cable and will let the group know of the results once I get to try it out on the LG Ultrawide

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  5. Anonymous
    2017-02-23T06:20:26+00:00

    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!

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