Yes, DP 1.2 turned on.
Surface Dock keeps waking up external monitor
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Anonymous
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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Anonymous
2017-10-26T15:32:57+00:00 -
Anonymous
2017-10-26T15:30:57+00:00 Seems quite a few cases here are related to LG monitors.... just wondering if you guys have turned on DP 1.2?
Cheers.
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Anonymous
2017-10-26T13:18:23+00:00 I have been fighting this issue for some time, with a Surface Dock and now a Surface Laptop. Doing my homework, updating firmware, on the phone with Microsoft, wait for a replacement.... Yes, the whole process you all know the pain of.
But now FIXED because of this thread!
THANKS TO ALL OF THE MEMBERS
Well, as Michael said in the last post, not fixed, but I will take the workaround.
I picked up an active MiniDP to HDMI 4k adapter and a good HDMI cable and it now works as I expected it to. My external Samsung 4k monitor shuts and stays off properly when the Surface Laptop is in sleep/hibernate/off mode. Plus I got a huge benefit from adding the 4k adapter: The monitor resolution now goes to 3840 x 2160. Nice and clear. Could never get that resolution before. What a difference.
Now for my rant/comments:
I started out long ago as an electronic technician and then moved into the computing side. Watching this thread really makes me appreciate members who share good troubleshooting processes and techniques. That is how we get great workarounds to deficient (not defective) hardware.
I call this hardware deficient because it does work as it was most likely designed and tested, with regular DP/HDMI. Now comes 4k and adds a new factor that I am sure a good Electronics Engineer could explain.
But this is all normal for the evolution of technology and kudos to those on this thread who took up the challenge to create workarounds instead of waiting for the big machine to fix it for us :)
But to Microsoft, even though your first level support folks use good scripts to help troubleshoot, know when to escalate. The members on this thread obviously took this past 1st and 2nd level support before anyone from MS stepped in. This "issue" is well past any support and I hope it has gone to engineering to review.
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Anonymous
2017-10-20T06:00:48+00:00 I read about it.
That's a workaround, not a solution!
What are the possible Hz?
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Anonymous
2017-10-19T22:17:27+00:00 Same Problem with
Monitor: LG 34UM88-P
miniDP to DP cable
new Surface Pro: i5 - 8GB
Did a Surface Dock Update, newest Fall Update + Drivers (Pen Problem still there - but another story) and ran the Surface Software Repair Tool.
So... where is the problem?
I have the same monitor. Using a UHD mDP to Hdmi adapter resolved the sleep problem. I know it's a suboptimal setup but the sleep issue was driving me crazy.
Used one similar to this and connected the HDMI cable that came with the monitor.