We have identified that part of Dell D6000 docks produced between mid 2018-mid 2019 contains USB Hub firmware issue that was uncovered by macOS Catalina 10.15.1 release.
There is a for that.
Please update your dock hub using "Dell Firmware Update Utility":
https://www.dell.com/support/home/pl...-d6000/drivers
@davidwiens
If hub firmware does not help then please submit your logs using that tool:
https://www.displaylink.com/downloads/file?d=66