Hello, thank you for your support.
I’ve received a new laptop from work and having big troubles with my docking station.
HDMI 1 and 2:
HDMI1 not working. HDMI2 working.
HDMI2 and Display 1:
Display1 not working. HDMI2 working.
HDMI 2 and 3:
HDMI2 and HDMI3 working. Both monitors start blinking intermittently after 3-4 minutes.
HDMI 3 and Display 2:
Both working. Both monitors start blinking intermittently after 3-4 minutes.
Also, Windows does not recognise the monitor speakers. I plugged one monitor directly into the laptop and the speaker was recognised, so it’s definitely through the docking station that is causing the problem.
Thanks for contacting Plugable! I’m sorry the UD-ULTC4K isn’t working as expected with your new laptop and I’ll be happy to help.
Based on your description of the behaviour, it sounds like something is interfering with the DP Alt mode based DISPLAY 1 video output ports on the dock from working correctly. The DISPLAY 2 and 3 ports use DisplayLink to produce video, so that may explain why they work correctly when the DISPLAY 1 ports do not.
There’s a few reasons why this may happen, including an issue with the dock’s USB-C cable, an issue with the dock itself, or potentially the computer lacking support for DP Alt mode on its USB-C port (it’s an optional feature that not all USB-C ports have). I have some questions for you to help narrow down the cause here:
Are you using the USB-C cable that was originally included in the package with the dock to connect it to your laptop? I ask because not all cables support DP Alt mode.
What is the brand and specific model number of your laptop
This may be written on the label on the bottom of the computer
Alternatively, you could collect this from the System Information (msinfo32) file on your computer by following these steps:
Press Windows Key + R on the keyboard
In the Run window, type msinfo32 and press Enter
The System Information window will open
Make sure System Summary is selected on the left
On the right side, look for System Model
Copy the System Model value and send it to us
Regarding the audio issue, the monitor’s built in speakers will appear to the computer as “Plugable Audio” when plugged in through the DISPLAY 2 and 3 ports of the UD-ULTC4K since the model information is obscured by the DisplayLink chip in the dock. The output would appear as the monitor’s model number if it’s plugged into the DISPLAY 1 video output of the dock.
Please let me know if you have any questions as well.
Apologies for the frustration, and thank you for giving us the chance to help!