Hello,
Please upgrade the firmware for your D6000 docking stations.
The manufacturer provides with a file that allows users to upgrade the firmware but only on a Windows based PC.
The link to the file can be found below:
https://www.dell.com/support/home/us...-d6000/drivers
Download it and update while connected to Windows machine. After the update please verify if it will be working on your regular computers.
Best regards,
Katarzyna