I have a headless raspberry setup and I have connected a USB speaker and a microphone in order to run mycroft.
The problem is that I have no sound through the speakers.
Alsamixer is recognizing the speaker when I press the F6 (sound card menu). But the speaker icon on the tray I get a message saying "No audio device found" when I press it with a right-click. The left-click gives me a volume control and shows 100% volume.
PulseAudio gives me the following error when I run the command "pulseaudio"
I have connected a screen and the sound works fine when I log in from a "real" desktop.W: [pulseaudio] alsa-util.c: Unable to load mixer: Invalid argument
W: [pulseaudio] alsa-util.c: Unable to load mixer: Invalid argument
E: [pulseaudio] socket-server.c: bind(): Address already in use
E: [pulseaudio] module.c: Failed to load module "module-native-protocol-unix" (argument: ""): initialization failed.
E: [pulseaudio] main.c: D-Bus name org.PulseAudio1 already taken.
Can you please help! Thank you