> They all paired fine as headphones, but the microphones never worked. To me that doesn't sound like a hardware problem. I need to switch the codec & profile[

> They all paired fine as headphones, but the microphones never worked. To me that doesn't sound like a hardware problem. I need to switch the codec & profile[0] in pavucontrol to use the microphones, which is not done automatically. That might be the issue here. [0]: Damm you, bluetooth SIG