The Microsoft Surface Thunderbolt(TM) 4 Dock Audio device gets glitched once the Mac goes to sleep or is disconnected and connected.

Symptoms:

• No sound on that device, obviously
• Applications that list audio devices hang
• Applications that reproduce sound can hang

Easily reproducible:

• Audio Midi Setup: long time to open, shows Microsoft Surface Thunderbolt(TM) 4 Dock Audio (1 & 2) without available formats
• Screenshot: long time to open, you'll forget you've triggered it using a key combination

Workaround

Working

• Restart the Mac
• Restart coreaudiod

Not working

• Restarting the dock does not fix the issue

Solution

This is a daemon that will launch and keep running, listening for sleep and wake events as well as audio device changes.

• Once the Mac goes to sleep the daemon will take note and upon wake, if the dock is connected, will restart coreaudiod.
• If it detects an audio device change and finds the dock is connected it will restart coreaudiod.

While checking if the dock is pressent in the audio devices and if it has formats available, to prevent the restart of coreaudiod if it's not needed, checking the audio devices will also trigger the hang, so the daemon will loose it's purpose being unresponsive for a minute or so.

Installation

Compile the project, place the executable near the Daemon/install and then execute Daemon/install.