I have been using a UD3900 docking station supplied by my employer to work from home. It has been working well at the office, and then here at home with my laptop for the past 4 months. I was also unplugging it from my laptop and into my personal desktop when not working. It has been working fine with my double monitors.
Friday, both monitors started showing “no input” when plugged into my laptop. I have verified all connections are good and tight. Then, when I plugged into my desktop, again, monitors displayed no input.
I went to the office and got a replacement dock, same model, but to no avail. I then upgraded to a UD3900H. The same thing happened. Both screens still displayed “no input”. However, when I moved the connection to another USB port on my desktop, I was able to get the screens to display. However, no matter what port I use on my laptop, I have not been able to get it to function. Still showing no input on the screens.
I tested the monitors by plugging them directly into the laptop and they work fine, as well as working on an alternate USB port on my desktop.
I have been working with my original docks, both computers, and same ports for 4 months working at home with no problems.This issue just started this past Friday and I have not been able to rectify. I should note that the docks seem to work fine with the keyboard and mouse on both computers.
I have powered down all units a number of times and restarted to no avail.
Thank you for posting! I am sorry things have stopped working as expected with your docking stations and I would be happy to help.
Thank you as well for the detail you have provided and the troubleshooting that you have already performed that is much appreciated.
There are quite a few different variables in this case, so to help simplify things at the start lets first focus only on your personal laptop and the original UD-3900 docking station.
Given your description of the behavior, our first step is to perform a ‘clean’ installation of the latest version we recommend of the dock’s required DisplayLink driver on your laptop to help ensure it is in a good state. To do so, please follow these steps:
Please disconnect the dock from the system and please disconnect the power cable from the dock so it turns off completely. Please keep everything disconnected until the last step.
Uninstall any and all software with ‘DisplayLink’ in the title that is present from within the Control Panel → Programs and Features. Don’t worry if these entries are not present or if the process does not work, please just move onto the next step.
Reconnect the power cable to the dock first. Once the dock is powered on (a blue light will be present on the front), reconnect it to your system. If the device is not detected, please reboot the system.
Apologies again for the frustration, and please let us know if that information helps!