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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.
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.
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
Hi,
We would like to know more info about your concern. Can you confirm the following information:
Regards.
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.
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.
Agreed on all counts. I read somewhere that the problem does not exist if you switch cables to the HDMI type. I currently run from the dock (mini DP) to the monitor (full DP) and get the endless problem being discussed in this thread. I don't have a mini DP to HDMI cable otherwise I'd try. In any eventi think this is total BS and needs to be corrected immediately.
