One HDMI monitor randomly turns off and on


I’m having the identical symptoms with my plugable usb-c 4k attached to a dell spx13.


Hello Mark,

Since you have a different docking product than that of the original thread, I have created a new thread in the appropriate category.

Generally speaking, we’ve had good luck with most of the Dell XPS 13 models with this docking station. I’ll be happy to assist you with this issue.

Your dock (based on your description it sounds like you have the UD-ULTC4K model) has one HDMI and two DisplayPorts, what monitor is randomly turning on and off, just the HDMI, or is it a combination of ports giving you the problem?

We have a troubleshooting tool that helps us find out what is going on in situations like this. Please plug the dock with your displays attached to it into your computer, then go to this page and follow the instructions there:

Please reference ticket 328360 when emailing us the diagnostic results.

Thanks again for contacting Plugable support and best wishes!

Joshua Henry

Senior Engineer | Product Owner
Plugable Technologies

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