Hi, and merry christmas :)
I upgraded to the newest ALSA versions with no effect:
Driver version:     1.0.21
Library version:    1.0.22
Utilities version:  1.0.21

State after reboot, all channels unmuted and at maximum, no sound output:
http://www.alsa-project.org/db/?f=56ce8892359ae80bf75d2d3b7f5797884ebfa94d
("stream=5", no "HDA Intel 0000:00:1b.0: PCI INT A disabled", "Subdevices: 0/1")

State after
sudo alsa force-reload
alsamixer + unmute all channels and set all to maximum (default is muted)
(Sound output works perfectly):
http://www.alsa-project.org/db/?f=f6ab3e85d28bfff2521b00371047eb5bd0af1084
("stream=0", "HDA Intel 0000:00:1b.0: PCI INT A disabled", "Subdevices: 1/1")

force-reload output:
$ sudo alsa force-reload
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/renate/.gvfs
      Output information may be incomplete.
Terminating processes: 1834lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon 
file system /home/renate/.gvfs
      Output information may be incomplete.
 2070lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system 
/home/renate/.gvfs
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/renate/.gvfs
      Output information may be incomplete.
.
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/renate/.gvfs
      Output information may be incomplete.
Unloading ALSA sound driver modules: snd-hda-codec-analog snd-hda-intel 
snd-hda-codec snd-pcm-oss snd-hwdep 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-analog snd-hda-codec snd-hwdep snd-pcm snd-timer snd-page-alloc).
Loading ALSA sound driver modules: snd-hda-codec-analog snd-hda-intel 
snd-hda-codec snd-pcm-oss snd-hwdep 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.


_Please_ tell me what to do so that I get the force-reload state immediately 
after reboot - thanks!

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HP550: No sound from laptop speakers, only from headphone in karmic
https://bugs.launchpad.net/bugs/492303
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