Quando eu digito no terminal alsactl restore (que corrigiu esse problema no passado) recebi a resposta
alsactl restore
alsactl: state_lock:125: file /var/lib/alsa/asound.state lock error: File exists
alsactl: load_state:1683: Cannot open /var/lib/alsa/asound.state for reading: File exists
Found hardware: "HDA-Intel" "Intel Haswell HDMI" "HDA:80862807,80860101,00100000" "0x1028" "0x0651"
Hardware is initialized using a generic method
Found hardware: "HDA-Intel" "Realtek ALC3234" "HDA:10ec0255,10280651,00100002" "0x1028" "0x0651"
Hardware is initialized using a generic method