pulseaudio falhou ao iniciar se o Ubuntu 21.04 for executado com o microfone USB conectado. Mas o pulseaudio inicia normalmente se o Ubuntu 21.04 for executado sem o USB, e ainda funciona bem mesmo com o USB conectado após a inicialização do sistema.
A mensagem de log do journalctl quando o pulseaudio falhou ao iniciar:
-- Boot 37de7028dfda47569d03504658160650 --
Dec 11 04:46:09 hirsute-server systemd[1958]: Starting Sound Service...
Dec 11 04:46:10 hirsute-server pulseaudio[1967]: No such profile: output:hdmi-stereo
Dec 11 04:46:10 hirsute-server pulseaudio[1967]: Failed to initialize daemon due to errors while executing startup commands. Source of commands: /etc/pulse/>
Dec 11 04:46:10 hirsute-server systemd[1958]: pulseaudio.service: Main process exited, code=exited, status=1/FAILURE
Dec 11 04:46:10 hirsute-server systemd[1958]: pulseaudio.service: Failed with result 'exit-code'.
Dec 11 04:46:10 hirsute-server systemd[1958]: Failed to start Sound Service.
Dec 11 04:46:10 hirsute-server systemd[1958]: pulseaudio.service: Scheduled restart job, restart counter is at 1.
Dec 11 04:46:10 hirsute-server systemd[1958]: Stopped Sound Service.
Dec 11 04:46:10 hirsute-server systemd[1958]: Starting Sound Service...
Dec 11 04:46:11 hirsute-server pulseaudio[2087]: No such profile: output:hdmi-stereo
Dec 11 04:46:11 hirsute-server pulseaudio[2087]: Failed to initialize daemon due to errors while executing startup commands. Source of commands: /etc/pulse/>
Dec 11 04:46:11 hirsute-server systemd[1958]: pulseaudio.service: Main process exited, code=exited, status=1/FAILURE
Dec 11 04:46:11 hirsute-server systemd[1958]: pulseaudio.service: Failed with result 'exit-code'.
Dec 11 04:46:11 hirsute-server systemd[1958]: Failed to start Sound Service.
Dec 11 04:46:11 hirsute-server systemd[1958]: pulseaudio.service: Scheduled restart job, restart counter is at 2.
Alguma ideia? Se precisar de mais informações, não hesite em me avisar.