- MacBook Air, Retina, 13-inch, 2019
Running Catalina 10.15.2
Using USB-C to HDMI adaptors, MacBook Air sound preference center cannot recognize the device it is plugged to (HDMI cable connects the adaptor to the TV monitor; sound on TV monitors has been tested; older MacBook Pro with HDMI output can output sound just fine);
- Video is fine
- Tried with three different USB-C to HDMI adptors: two StarTech and one CLDAY. All are supposed to support audio output
- Troubleshoot this on two different screens, and two different projectors (hooked to speakers)
- Troubleshoot while being powered on (i.e. with AC plugged in)
No sound nor device detected (in the sound panel) in every case.
In each case, the sound is being played through the MacBook Air internal speakers.