Comment 15 for bug 400682

The output of your request is:
$ sudo /sbin/alsa force-unload && sudo rm /var/lib/alsa/asound.state
[sudo] password for jamie:
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
Terminating processes: 4557lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
.
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
Unloading ALSA sound driver modules: snd-hda-codec-idt snd-hda-intel snd-hda-codec snd-pcm-oss snd-mixer-oss snd-pcm snd-seq-dummy snd-seq-oss snd-seq-midi snd-rawmidi snd-seq-midi-event snd-seq snd-timer snd-seq-device snd-page-alloc (failed: modules still loaded: snd-hda-codec-idt snd-hda-codec snd-pcm snd-timer snd-page-alloc).

This didn't unload all the modules, so I did the force-unload again before the reboot:
$ sudo /sbin/alsa force-unload
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/jamie/.gvfs
      Output information may be incomplete.
Unloading ALSA sound driver modules: snd-hda-codec-idt snd-hda-codec snd-pcm snd-timer snd-page-alloc.

After logging in on reboot, still no sound:
$ ps auxww|grep pulse
jamie 5120 0.0 0.0 7340 892 pts/0 S+ 22:22 0:00 grep pulse
$ speaker-test -c2 -Dplug:front

speaker-test 1.0.20

Playback device is plug:front
Stream parameters are 48000Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 64 to 16384
Period size range from 32 to 8192
Using max buffer size 16384
Periods = 4
was set period_size = 4096
was set buffer_size = 16384
 0 - Front Left
 1 - Front Right
...