Audio output failing

I have this dock connected to a MacBook Pro with:

  • M1 Pro chip
  • 16GB RAM
  • macOS 13.6.2

I have it connected via a Thunderbolt 4 cable, with two monitors connected to the dock:

  • Apple Studio Display 27" using Thunderbolt
  • LG 24" 4K display using DisplayPort

I have an audio out cable from the dock to a pair of powered speakers.

Pretty regularly the audio out will just stop working. I can switch it to the Studio Display speakers, and that works fine, but the audio via the dock (USB Audio CODEC in my sound settings) won’t produce any output.

If I unplug the dock from my Mac and plug it back in, the audio will work again. I’m not sure if there are any specific conditions in play when the audio stops working.

Anything else I should try?

Hello River,

Thank you for reaching out on the forums! I am sorry to hear that you are running into issues with your dock, but I would be happy to help diagnose the issue here.

First, some steps we’ll want to take are to perform a power-cycle of the unit to reset its internal hub chipset. We’ve seen that this can often restore the dock back to a working state when one or more of its functions are not quite working. To do this, please follow these steps:

  1. Disconnect all USB peripherals and displays connected to the dock
  2. Disconnect the docking station from host machine, then disconnect the power adapter from power
  3. Leave unplugged for 1 minute for power to dissipate
  4. Connect docking station initially into power only
  5. Connect docking station to host machine, then connect USB peripherals and displays, then test for functionality

Please let me know if this helps at all.

Additionally, can you clarify whether this issue has always been present in the dock ever since you started using it, or has this issue only popped up recently?

Thank you,


Plugable Technologies

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