I have a laptop with a USB-C port to which I connected my USB-C earphones (earbuds from Google, not the Bluetooth ones). The device is correctly listed in the audio output channels, but selecting them doesn't affect the audio system, which continues to output from the laptop speakers.
As you can see from the screenshot above, I selected the device, but when I press "Test Speakers" the audio keeps coming from the Laptop Speakers.
pavucontrol and the USB-C device is not listed there. See screenshot below
If I use the command line utility
speaker-test, I am able to force the audio through the earphones. Specifically this command works perfectly.
speaker-test -D plughw:earbuds -c 2
Any suggestion on how to route the system audio through the earphones?
System data: - Ubuntu 18.10 - Laptop: Huawei Matebook X Pro - Earphones: Google Earbuds (HW ID 18d1:5033)