everything loads fine, but no sound, only 1 channel in alsamixer

Hi,

I've just installed Ubuntu Dapper on my new Vaio SZ110.
I've seen similar bugs in the database but this one seems to apply to the SigmaTel codec.

Everything loads fine, all the modules seems to be installed successfully. Alsa mixer reports only one channel called PCM, nothing else. This channel is unmuted and the volume at its maximum. But still, there is no sound at all.
The gnome volume controller reports the same thing.

This laptop model came out very recently.

Here is all the information regarding my machine that i thought could be relevant to this bug.

----
root@haifa:/home/ariel# lsmod | grep hda_intel
snd_hda_intel 19056 2
snd_hda_codec 92576 1 snd_hda_intel
snd_pcm 96644 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd 59972 10 snd_hda_intel,snd_hda_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
snd_page_alloc 11304 2 snd_hda_intel,snd_pcm
root@haifa:/home/ariel#

here's the line for the sound in lspci:
0000:00:1b.0 0403: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)

here is the content of /proc/asound/cards:
0 [Intel ]: HDA-Intel - HDA Intel
                     HDA Intel at 0xdc340000 irq 74

root@haifa:/home/ariel# cat /proc/asound/card0/codec#0
Codec: SigmaTel ID 7661
Address: 0
Vendor Id: 0x83847661
Subsystem Id: 0x104d0700
Revision Id: 0x104201
Default PCM: rates 0x7e0, bits 0x0e, types 0x1
Default Amp-In caps: ofs=0x00, nsteps=0x0f, stepsize=0x05, mute=1
Default Amp-Out caps: ofs=0x7f, nsteps=0x7f, stepsize=0x02, mute=1
Node 0x02 [Audio Output] wcaps 0xd0c05: Stereo Amp-Out
  Amp-Out caps: N/A
  Amp-Out vals: [0xff 0xff]
  Power: 0x33
Node 0x03 [Audio Output] wcaps 0xd0c05: Stereo Amp-Out
  Amp-Out caps: N/A
  Amp-Out vals: [0xff 0xff]
  Power: 0x33
Node 0x04 [Audio Output] wcaps 0xd0c05: Stereo Amp-Out
  Amp-Out caps: N/A
  Amp-Out vals: [0xff 0xff]
  Power: 0x33
Node 0x05 [Audio Output] wcaps 0xd0c05: Stereo Amp-Out
  Amp-Out caps: N/A
  Amp-Out vals: [0xff 0xff]
  Power: 0x33
Node 0x06 [Audio Input] wcaps 0x1d0541: Stereo
  Power: 0x33
  Connection: 1
     0x07
Node 0x07 [Audio Selector] wcaps 0x300903: Stereo Amp-In
  Amp-In caps: N/A
  Amp-In vals: [0x80 0x80]
  Connection: 1
     0x0e
Node 0x08 [Audio Input] wcaps 0x1d0541: Stereo
  Power: 0x33
  Connection: 1
     0x09
Node 0x09 [Audio Selector] wcaps 0x300903: Stereo Amp-In
  Amp-In caps: N/A
  Amp-In vals: [0x80 0x80]
  Connection: 1
     0x15
Node 0x0a [Pin Complex] wcaps 0x400181: Stereo
  Pincap 0x08173c: IN OUT HP
  Pin Default 0x012110f0: [Jack] HP Out at Ext Rear
    Conn = 1/8, Color = Black
  Pin-ctls: 0x00:
  Connection: 1
     0x02
Node 0x0b [Pin Complex] wcaps 0x400181: Stereo
  Pincap 0x0814: OUT
  Pin Default 0x40f000fb: [N/A] Other at Ext N/A
    Conn = Unknown, Color = Unknown
  Pin-ctls: 0x00:
  Connection: 1
     0x04
Node 0x0c [Pin Complex] wcaps 0x400181: Stereo
  Pincap 0x0814: OUT
  Pin Default 0x40f000fc: [N/A] Other at Ext N/A
    Conn = Unknown, Color = Unknown
  Pin-ctls: 0x00:
  Connection: 1
     0x03
Node 0x0d [Pin Complex] wcaps 0x400181: Stereo
  Pincap 0x08173c: IN OUT HP
  Pin Default 0x41a15020: [N/A] Mic at Ext Rear
    Conn = 1/8, Color = Red
  Pin-ctls: 0x00:
  Connection: 1
     0x02
Node 0x0e [Pin Complex] wcaps 0x400081: Stereo
  Pincap 0x0824: IN
  Pin Default 0x90370060: [Fixed] CD at Int N/A
    Conn = Analog, Color = Unknown
  Pin-ctls: 0x00:
Node 0x0f [Pin Complex] wcaps 0x400181: Stereo
  Pincap 0x0814: OUT
  Pin Default 0x90170010: [Fixed] Speaker at Int N/A
    Conn = Analog, Color = Unknown
  Pin-ctls: 0x00:
  Connection: 1
     0x05
Node 0x10 [Audio Output] wcaps 0x40211: Stereo Digital
  PCM: rates 0x3e0, bits 0x0e, types 0x5
Node 0x11 [Pin Complex] wcaps 0x400301: Stereo Digital
  Pincap 0x0810: OUT
  Pin Default 0x40f000fd: [N/A] Other at Ext N/A
    Conn = Unknown, Color = Unknown
  Pin-ctls: 0x00:
  Connection: 2
     0x10* 0x09
Node 0x12 [Audio Input] wcaps 0x140311: Stereo Digital
  PCM: rates 0x160, bits 0x0e, types 0x5
  Connection: 1
     0x13
Node 0x13 [Pin Complex] wcaps 0x440381: Stereo Digital
  Pincap 0x0834: IN OUT
  Pin Default 0x40f000fe: [N/A] Other at Ext N/A
    Conn = Unknown, Color = Unknown
  Pin-ctls: 0x00:
  Connection: 1
     0x18
Node 0x14 [Pin Complex] wcaps 0x400001: Stereo
  Pincap 0x0820: IN
  Pin Default 0x90a7002e: [Fixed] Mic at Int N/A
    Conn = Analog, Color = Unknown
  Pin-ctls: 0x00:
Node 0x15 [Audio Selector] wcaps 0x30010d: Stereo Amp-Out
  Amp-Out caps: ofs=0x00, nsteps=0x04, stepsize=0x27, mute=1
  Amp-Out vals: [0x00 0x00]
  Connection: 4
     0x0a* 0x0d 0x14 0x02
Node 0x16 [Beep Generator Widget] wcaps 0x70000c: Mono Amp-Out
  Amp-Out caps: ofs=0x03, nsteps=0x03, stepsize=0x17, mute=0
  Amp-Out vals: [0x00]
Node 0x17 [Volume Knob Widget] wcaps 0x600000: Mono
Node 0x18 [Audio Output] wcaps 0x40201: Stereo Digital