For some reason the thunderbolt 3 usb-c port in my HP Elite X2 G1 Convertable does not work with my new digital usb-c headphones (Xiaomi Piston ANC). When I plug in the headphones to the thunderbolt 3 usb-c port only "Intel(R) USB 3.1 extensible-Hostcontroller-1.10 (Microsoft) shows up in device manager but apart from that nothing happens, no sound no volume control.

I have done some testing to find the problem and found the following:

-The headset works without any problems with all my other (non thunderbolt) usb-c devices (windows and android).

-I got the headset to work in the thunderbolt port with a combination of 2 adapters: I had to plug a usb-c-to-female-usb-a-adapter into the thunderbolt 3 port and into this another usb-a-to-female-usb-c-adapter and into this the headphones. Going from usb-c to usb-a and back to usb-c with all those adapters is hardly an accepatable solution as in makes the headphoes extremely bulky.

-Updating drivers and thunderbolt controller firmware to latest version changed nothing.

Anyone has an idea where the problem is? Maybe the usb-c headset is not recognised correctly based on the resistor values in its usb-c plug (therefore working when having usb-c-to-usb-a and usb-a-to-usb-c adapters inbetween)? But why does it then work with  all the other usb-c controllers? I hope this is not a hardware issue in the thunderbolt 3 controller.