I have had the problem with a variety of cables. I think its a software issue. Wiggeling the cable does not cause any issues. The screen never looses signal its just briefly black.
This is why I switched to display port. It seems to work so much better. Also see if your dock is overheating. I’ve had that happen in the past and caused flickering issues.
Have you tried replacing your HDMI cable? That might causing the Docking station issue
I have had the problem with a variety of cables. I think its a software issue. Wiggeling the cable does not cause any issues. The screen never looses signal its just briefly black.
But I guess it can’t hurt to try more cables.
This is why I switched to display port. It seems to work so much better. Also see if your dock is overheating. I’ve had that happen in the past and caused flickering issues.
I tried displayport too. My main dell 4k monitor had some issues with it. I updated the firmware maybe it works better now.
I have two monitors. Depending on where I plug in, it uses MST or no mst.
Also good tip about the overheating but the dock has a fan and remains quite cool during operation.
It’s difficult to debug since sometimes it works for two days and on other days it hap’ens constantly.