pulseaudio --kill
carlos@carlos-X51L ~ $ sudo alsa force-reload
[sudo] password for carlos:
Terminating processes: 1063
1063 2443
2443.
Unloading ALSA sound driver modules: snd-hda-codec-si3054 snd-hda-codec-realtek snd-hda-codec-generic snd-hda-intel snd-usb-audio snd-hda-controller snd-hda-codec snd-usbmidi-lib snd-hwdep snd-seq-midi snd-seq-midi-event snd-rawmidi snd-seq snd-pcm snd-seq-device snd-timer (failed: modules still loaded: snd-hda-codec-si3054 snd-hda-codec-realtek snd-hda-codec-generic snd-hda-codec snd-hwdep snd-pcm snd-timer).
Loading ALSA sound driver modules: snd-hda-codec-si3054 snd-hda-codec-realtek snd-hda-codec-generic snd-hda-intel snd-usb-audio snd-hda-controller snd-hda-codec snd-usbmidi-lib snd-hwdep snd-seq-midi snd-seq-midi-event snd-rawmidi snd-seq snd-pcm snd-seq-device snd-timer.
carlos@carlos-X51L ~ $ pulseaudio --start