USB devices and/or displays are not detected after waking from sleep or after rebooting on macOS.

Last Update: August 6th, 2021
Article ID: 815680

We have been tracking reported issues where externally connected USB devices and/or internal USB devices within the TBT3-UDZ docking station (Ethernet, audio, and card reader) may not be detected after waking the system from sleep or after rebooting on some macOS systems. Some users may also experience one or both displays attached to the dock not waking from a low power state as well.

If experiencing issues with the Ethernet only, please see: https://kb.plugable.com/776031

To begin troubleshooting USB device and/or display issues:

If using an Intel based Mac we recommend the following steps:

  1. Unplug the dock from the Mac and unplug power from the dock. Please leave the dock disconnected until the final step.
  2. Perform an SMC reset: https://support.apple.com/en-us/HT201295 
  3. Perform an NVRAM/PRAM reset: https://support.apple.com/en-us/HT204063
  4. After logging back in, wait about 30 seconds, then plug power in to the dock and plug the dock in to the Mac and see if the behavior has improved.

If using an M1 based Mac we recommend the following steps:

  1. Unplug the dock from the Mac and unplug power from the dock. Please leave the dock disconnected until the final step.
  2. Fully shutdown the Mac. (On your Mac, click the "Apple" menu and select "Shut Down")
  3. After the Mac has shutdown, wait for one minute, then turn the Mac back on.
  4. After logging back in, wait for one more minute, then plug power in to the dock and plug the dock in to the Mac and see if the behavior has improved.

If these initial troubleshooting steps do not help, please contact us at support@plugable.com and we'll be happy to assist you.