jamie@jamiepc ~ $ sudo alsa force-reload
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
Terminating processes: 3553lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
 3653lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
 3670lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
 3687lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
 (with SIGKILL:) 3704lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
 (failed: processes still using sound devices: 3721(pulseaudio)).
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
/sbin/alsa: Warning: Processes using sound devices: 3721(pulseaudio).
Unloading ALSA sound driver modules: snd-seq-midi snd-seq-midi-event snd-seq snd-usb-audio snd-hda-codec-hdmi snd-hda-codec-realtek snd-usbmidi-lib snd-hda-intel snd-ctxfi snd-hda-codec snd-hwdep snd-rawmidi snd-pcm snd-timer snd-seq-device snd-page-alloc (failed: modules still loaded: snd-usb-audio snd-hda-codec-hdmi snd-hda-codec-realtek snd-usbmidi-lib snd-hda-intel snd-ctxfi snd-hda-codec snd-hwdep snd-rawmidi snd-pcm snd-timer snd-seq-device snd-page-alloc).
Loading ALSA sound driver modules: snd-seq-midi snd-seq-midi-event snd-seq snd-usb-audio snd-hda-codec-hdmi snd-hda-codec-realtek snd-usbmidi-lib snd-hda-intel snd-ctxfi snd-hda-codec snd-hwdep snd-rawmidi snd-pcm snd-timer snd-seq-device snd-page-alloc.