is there a way to monitor when the tb connector is plugged in what the MB does
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is there a way to monitor when the tb connector is plugged in what the MB does  


Sebastian Lauenstein
New Member
Joined: 12 months ago
Hello everyone I have a stupid question ..... in the system report I have no device connected. 
Is there a possibility to monitor when the TB cable is inserted what the MB does.
there is a tool for where you can ping the connection. or via the console, for example

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.


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Reputable Member
Joined: 4 years ago

Look at Hammerspoon. 
it might have a preconfiged spoon add on you are looking for. Or you can right one yourself in lua.

Present: 2012 Mac mini + PowerColor RX 56 Vega Nano @10Gbps-TB1 + PowerColor Mini eGFX 180F via Apple TB3 to TB2 + macOS Catalina 10.15.7

Previous: 2012 Mac Mini + GTX1070 @ 10Gbps-TB1 (AKiTiO Thunder3 via Apple TB3 to TB2 adapter) + macOS

2012 Mac Mini [3rd,4C,Q] + GTX 970 @ 10Gbps-TB1>TB3 (AKiTiO Node) + macOS 10.12.4 // lots of benchmarks [build link]  

Noble Member
Joined: 3 years ago

Something should appear in the log when a Thunderbolt device is connected. Check the log stream command. Learn about predicates for filtering the log messages.

You can turn on pci debug flags to see how new PCI devices on the Thunderbolt bus are added:

If you want to trace ACPI calls you can try using Open Core to override the DSDT with a version of the DSDT that has debug logging added to specific Thunderbolt related methods


Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case