Comment 2 for bug 373255

I can confirm this issue with HP Compaq CQ45-203 AU. Its occurred after I have run command:
sudo alsa force-reload

I'm using that command and restart pulseaudio server to fix lose sound on firefox and some applications. Before that I have add the line:
 options snd-hda-intel model=dell-m4-1 enable_msi=1
to end of /etc/modprobe.d/alsa-base.conf because Ubuntu have not detect correctly my hardware:
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)

The output of command: `sudo alsa force-reload` is there:
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/uocnguyen/.gvfs
      Output information may be incomplete.
Terminating processes: 4599 4804lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/uocnguyen/.gvfs
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/uocnguyen/.gvfs
      Output information may be incomplete.
.
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/uocnguyen/.gvfs
      Output information may be incomplete.
Unloading ALSA sound driver modules: snd-seq-dummy snd-seq-oss snd-seq-midi snd-hda-intel snd-rawmidi snd-seq-midi-event snd-pcm-oss snd-mixer-oss snd-seq snd-pcm snd-seq-device snd-timer snd-page-alloc.
Loading ALSA sound driver modules: snd-seq-dummy snd-seq-oss snd-seq-midi snd-hda-intel snd-rawmidi snd-seq-midi-event snd-pcm-oss snd-mixer-oss snd-seq snd-pcm snd-seq-device snd-timer snd-page-allocWARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
WARNING: All config files need .conf: /etc/modprobe.d/oss-compat, it will be ignored in a future release.
.

Best regard!