no sound in 1204 with imac 2.66Ghz

Can you give the output of:

wget -O alsa-info.sh http://www.alsa-project.org/alsa-info.sh && chmod +x ./alsa-info.sh && ./alsa-info.sh

Thanks

http://www.alsa-project.org/db/?f=820c120c84e4890780c5f51ac5965507191e9eab

!!################################
!!ALSA Information Script v 0.4.60
!!################################

!!Script ran on: Sat Apr 28 18:12:01 UTC 2012

!!Linux Distribution
!!------------------

Ubuntu 12.04 LTS \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"

!!DMI Information
!!---------------

Manufacturer: Apple Inc.
Product Name: iMac9,1
Product Version: 1.0

!!Kernel Information
!!------------------

Kernel release: 3.2.0-24-generic-pae
Operating System: GNU/Linux
Architecture: i686
Processor: i686
SMP Enabled: Yes

!!ALSA Version
!!------------

Driver version: 1.0.24
Library version: 1.0.25
Utilities version: 1.0.25

!!Loaded ALSA modules
!!-------------------

snd_hda_intel

!!Sound Servers on this system
!!----------------------------

Pulseaudio:
      Installed - Yes (/usr/bin/pulseaudio)
      Running - Yes

!!Soundcards recognised by ALSA
!!-----------------------------

 0 [NVidia ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xd3580000 irq 20

!!PCI Soundcards installed in the system
!!--------------------------------------

00:08.0 Audio device: NVIDIA Corporation MCP79 High Definition Audio (rev b1)

!!Advanced information - PCI Vendor/Device/Subsystem ID's
!!--------------------------------------------------------

00:08.0 0403: 10de:0ac0 (rev b1)
 Subsystem: 10de:cb79

!!Modprobe options (Sound related)
!!--------------------------------

snd-atiixp-modem: index=-2
snd-intel8x0m: index=-2
snd-via82xx-modem: index=-2
snd-usb-audio: index=-2
snd-usb-caiaq: index=-2
snd-usb-ua101: index=-2
snd-usb-us122l: index=-2
snd-usb-usx2y: index=-2
snd-cmipci: mpu_port=0x330 fm_port=0x388
snd-pcsp: index=-2
snd-usb-audio: index=-2

!!Loaded sound module options
!!--------------------------

!!Module: snd_hda_intel
 align_buffer_size : Y
 bdl_pos_adj : 32,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
 beep_mode : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 enable : Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
 enable_msi : -1
 id : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
 index : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
 model : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
 patch : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
 position_fix : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 power_save : 0
 power_save_controller : Y
 probe_mask : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
 probe_only : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
 single_cmd : N
 snoop : Y

!!HDA-Intel Codec information
!!---------------------------
--startcollapse--

Codec: Realtek ALC889A
Address: 0
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x10ec0885
Subsystem Id: 0x106b4300
Revision Id: 0x100103
No Modem Function Group found
Default PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
GPIO: io=2, o=0, i=0, unsolicited=1, wake=0
  IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
  IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
Node 0x02 [Audio Output] wcaps 0x11: Stereo
  Device: name="ALC889A Analog", type="Audio", device=0
  Converter: stream=8, channel=0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x03 [Audio Output] wcaps 0x11: Stereo
  Converter: stream=8, channel=2
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x04 [Audio Output] wcaps 0x11: Stereo
  Converter: stream=8, channel=0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x05 [Audio Output] wcaps 0x11: Stereo
  Converter: stream=0, channel=0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x06 [Audio Output] wcaps 0x211: Stereo Digital
  Control: name="IEC958 Playback Con Mask", index=0, device=0
  Control: name="IEC958 Playback Pro Mask", index=0, device=0
  Control: name="IEC958 Playback Default", index=0, device=0
  Control: name="IEC958 Playback Switch", index=0, device=0
  Control: name="IEC958 Default PCM Playback Switch", index=0, device=0
  Device: name="ALC889A Digital", type="SPDIF", device=1
  Converter: stream=0, channel=0
  Digital: Enabled
  Digital category: 0x0
  PCM:
    rates [0x5e0]: 44100 48000 88200 96000 192000
    bits [0x1e]: 16 20 24 32
    formats [0x1]: PCM
Node 0x07 [Audio Input] wcaps 0x10011b: Stereo Amp-In
  Control: name="Capture Switch", index=0, device=0
  Control: name="Capture Volume", index=0, device=0
  Device: name="ALC889A Analog", type="Audio", device=0
  Amp-In caps: ofs=0x10, nsteps=0x2e, stepsize=0x03, mute=1
  Amp-In vals: [0x2e 0x2e]
  Converter: stream=4, channel=0
  SDI-Select: 0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Connection: 1
     0x24
Node 0x08 [Audio Input] wcaps 0x10011b: Stereo Amp-In
  Control: name="Capture Switch", index=1, device=0
  Control: name="Capture Volume", index=1, device=0
  Device: name="ALC889A Analog", type="Audio", device=2
  Amp-In caps: ofs=0x10, nsteps=0x2e, stepsize=0x03, mute=1
  Amp-In vals: [0x8f 0x8f]
  Converter: stream=0, channel=0
  SDI-Select: 0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Connection: 1
     0x23
Node 0x09 [Audio Input] wcaps 0x10011b: Stereo Amp-In
  Control: name="Capture Switch", index=2, device=0
  Control: name="Capture Volume", index=2, device=0
  Amp-In caps: ofs=0x10, nsteps=0x2e, stepsize=0x03, mute=1
  Amp-In vals: [0x8b 0x8b]
  Converter: stream=0, channel=0
  SDI-Select: 0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
  Connection: 1
     0x22
Node 0x0a [Audio Input] wcaps 0x100391: Stereo Digital
  Control: name="IEC958 Capture Switch", index=0, device=0
  Control: name="IEC958 Capture Default", index=0, device=0
  Device: name="ALC889A Digital", type="SPDIF", device=1
  Converter: stream=0, channel=0
  SDI-Select: 0
  Digital:
  Digital category: 0x0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0x1e]: 16 20 24 32
    formats [0x1]: PCM
  Unsolicited: tag=00, enabled=0
  Connection: 1
     0x1f
Node 0x0b [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Control: name="Mic Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=1, ofs=0
  Control: name="Mic Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=1, ofs=0
  Control: name="Line Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=7, ofs=0
  Control: name="Line Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=7, ofs=0
  Control: name="Beep Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=5, ofs=0
  Control: name="Beep Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=5, ofs=0
  Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals: [0x80 0x80] [0x19 0x19] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x1a 0x1a] [0x80 0x80] [0x1c 0x1c] [0x80 0x80] [0x80 0x80]
  Connection: 10
     0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16 0x17
Node 0x0c [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out
  Control: name="Speaker Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x00 0x00] [0x00 0x00]
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals: [0x40 0x40]
  Connection: 2
     0x02 0x0b
Node 0x0d [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out
  Control: name="Bass Speaker Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x00 0x00] [0x00 0x00]
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals: [0x32 0x32]
  Connection: 2
     0x03 0x0b
Node 0x0e [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out
  Control: name="Headphone Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x00 0x00] [0x00 0x00]
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals: [0x40 0x40]
  Connection: 2
     0x04 0x0b
Node 0x0f [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x00 0x00] [0x80 0x80]
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals: [0x40 0x40]
  Connection: 2
     0x05 0x0b
Node 0x10 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x11 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x12 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x13 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x14 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Control: name="Headphone Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Control: name="Headphone Jack", index=0, device=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals: [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x00 0x00]
  Pincap 0x0000373c: IN OUT HP Detect
    Vref caps: HIZ 50 GRD 80 100
  Pin Default 0x012b4050: [Jack] HP Out at Ext Rear
    Conn = Comb, Color = Green
    DefAssociation = 0x5, Sequence = 0x0
  Pin-ctls: 0xc0: OUT HP VREF_HIZ
  Unsolicited: tag=01, enabled=1
  Connection: 5
     0x0c 0x0d 0x0e* 0x0f 0x26
Node 0x15 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Control: name="Line Jack", index=0, device=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals: [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80 0x80]
  Pincap 0x0000373c: IN OUT HP Detect
    Vref caps: HIZ 50 GRD 80 100
  Pin Default 0x018b3020: [Jack] Line In at Ext Rear
    Conn = Comb, Color = Blue
    DefAssociation = 0x2, Sequence = 0x0
  Pin-ctls: 0x20: IN VREF_HIZ
  Unsolicited: tag=02, enabled=1
  Connection: 5
     0x0c 0x0d* 0x0e 0x0f 0x26
Node 0x16 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals: [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80 0x80]
  Pincap 0x0000003c: IN OUT HP Detect
  Pin Default 0x400000f0: [N/A] Line Out at Ext N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x20: IN
  Unsolicited: tag=00, enabled=0
  Connection: 5
     0x0c 0x0d 0x0e* 0x0f 0x26
Node 0x17 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals: [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80 0x80]
  Pincap 0x0000003c: IN OUT HP Detect
  Pin Default 0x400000f0: [N/A] Line Out at Ext N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x20: IN
  Unsolicited: tag=00, enabled=0
  Connection: 5
     0x0c 0x0d 0x0e 0x0f* 0x26
Node 0x18 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Control: name="Bass Speaker Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals: [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x00 0x00]
  Pincap 0x0000373c: IN OUT HP Detect
    Vref caps: HIZ 50 GRD 80 100
  Pin Default 0x90100141: [Fixed] Speaker at Int N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0x4, Sequence = 0x1
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT VREF_HIZ
  Unsolicited: tag=00, enabled=0
  Connection: 5
     0x0c 0x0d* 0x0e 0x0f 0x26
Node 0x19 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Control: name="Mic Boost Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals: [0x03 0x03]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80 0x80]
  Pincap 0x0000373c: IN OUT HP Detect
    Vref caps: HIZ 50 GRD 80 100
  Pin Default 0x90a00110: [Fixed] Mic at Int N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x24: IN VREF_80
  Unsolicited: tag=00, enabled=0
  Connection: 5
     0x0c* 0x0d 0x0e 0x0f 0x26
Node 0x1a [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Control: name="Speaker Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals: [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x00 0x00]
  Pincap 0x0000373c: IN OUT HP Detect
    Vref caps: HIZ 50 GRD 80 100
  Pin Default 0x90100140: [Fixed] Speaker at Int N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0x4, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT VREF_HIZ
  Unsolicited: tag=00, enabled=0
  Connection: 5
     0x0c* 0x0d 0x0e 0x0f 0x26
Node 0x1b [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0
  Amp-In vals: [0x00 0x00]
  Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-Out vals: [0x80 0x80]
  Pincap 0x0000373c: IN OUT HP Detect
    Vref caps: HIZ 50 GRD 80 100
  Pin Default 0x400000f0: [N/A] Line Out at Ext N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x20: IN VREF_HIZ
  Unsolicited: tag=00, enabled=0
  Connection: 5
     0x0c* 0x0d 0x0e 0x0f 0x26
Node 0x1c [Pin Complex] wcaps 0x400001: Stereo
  Pincap 0x00000020: IN
  Pin Default 0x400000f0: [N/A] Line Out at Ext N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x20: IN
Node 0x1d [Pin Complex] wcaps 0x400000: Mono
  Pincap 0x00000020: IN
  Pin Default 0x400000f0: [N/A] Line Out at Ext N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x20: IN
Node 0x1e [Pin Complex] wcaps 0x400300: Mono Digital
  Pincap 0x00000010: OUT
  Pin Default 0x014be060: [Jack] SPDIF Out at Ext Rear
    Conn = Comb, Color = White
    DefAssociation = 0x6, Sequence = 0x0
  Pin-ctls: 0x40: OUT
  Connection: 1
     0x06
Node 0x1f [Pin Complex] wcaps 0x400200: Mono Digital
  Pincap 0x00000020: IN
  Pin Default 0x01cbe030: [Jack] SPDIF In at Ext Rear
    Conn = Comb, Color = White
    DefAssociation = 0x3, Sequence = 0x0
  Pin-ctls: 0x20: IN
Node 0x20 [Vendor Defined Widget] wcaps 0xf00040: Mono
  Processing caps: benign=0, ncoeff=17
Node 0x21 [Volume Knob Widget] wcaps 0x600080: Mono
  Volume-Knob: delta=0, steps=32, direct=0, val=0
  Unsolicited: tag=00, enabled=0
  Connection: 0
Node 0x22 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Control: name="Input Source", index=2, device=0
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x80 0x80] [0x00 0x00] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
  Connection: 11
     0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16 0x17 0x0b
Node 0x23 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Control: name="Input Source", index=1, device=0
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x80 0x80] [0x00 0x00] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
  Connection: 11
     0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16 0x17 0x0b
Node 0x24 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Control: name="Input Source", index=0, device=0
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x80 0x80] [0x00 0x00] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
  Connection: 11
     0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x16 0x17 0x0b
Node 0x25 [Audio Output] wcaps 0x11: Stereo
  Converter: stream=0, channel=0
  PCM:
    rates [0x560]: 44100 48000 96000 192000
    bits [0xe]: 16 20 24
    formats [0x1]: PCM
Node 0x26 [Audio Mixer] wcaps 0x20010f: Stereo Amp-In Amp-Out
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x00 0x00] [0x80 0x80]
  Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
  Amp-Out vals: [0x40 0x40]
  Connection: 2
     0x25 0x0b
--endcollapse--

!!ALSA Device nodes
!!-----------------

crw-rw---T 1 root audio 116, 8 Apr 28 13:28 /dev/snd/controlC0
crw-rw---T 1 root audio 116, 7 Apr 28 13:28 /dev/snd/hwC0D0
crw-rw---T 1 root audio 116, 6 Apr 28 13:55 /dev/snd/pcmC0D0c
crw-rw---T 1 root audio 116, 5 Apr 28 13:56 /dev/snd/pcmC0D0p
crw-rw---T 1 root audio 116, 4 Apr 28 13:47 /dev/snd/pcmC0D1c
crw-rw---T 1 root audio 116, 3 Apr 28 13:47 /dev/snd/pcmC0D1p
crw-rw---T 1 root audio 116, 2 Apr 28 13:28 /dev/snd/pcmC0D2c
crw-rw---T 1 root audio 116, 1 Apr 28 13:28 /dev/snd/seq
crw-rw---T 1 root audio 116, 33 Apr 28 13:28 /dev/snd/timer

/dev/snd/by-path:
total 0
drwxr-xr-x 2 root root 60 Apr 28 13:28 .
drwxr-xr-x 3 root root 240 Apr 28 13:28 ..
lrwxrwxrwx 1 root root 12 Apr 28 13:28 pci-0000:00:08.0 -> ../controlC0

!!Aplay/Arecord output
!!------------

APLAY

**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC889A Analog [ALC889A Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: ALC889A Digital [ALC889A Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

ARECORD

**** List of CAPTURE Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC889A Analog [ALC889A Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: ALC889A Digital [ALC889A Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 2: ALC889A Analog [ALC889A Analog]
  Subdevices: 2/2
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1

!!Amixer output
!!-------------

!!-------Mixer controls for card 0 [NVidia]

Card hw:0 'NVidia'/'HDA NVidia at 0xd3580000 irq 20'
  Mixer name : 'Realtek ALC889A'
  Components : 'HDA:10ec0885,106b4300,00100103'
  Controls : 35
  Simple ctrls : 18
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 64
  Mono: Playback 64 [100%] [0.00dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 64 [100%] [0.00dB] [on]
  Front Right: Playback 64 [100%] [0.00dB] [on]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 64 [100%] [0.00dB] [on]
  Front Right: Playback 64 [100%] [0.00dB] [on]
Simple mixer control 'Bass Speaker',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 64
  Mono:
  Front Left: Playback 50 [78%] [-14.00dB] [on]
  Front Right: Playback 50 [78%] [-14.00dB] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB]
  Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 28 [90%] [7.50dB] [on]
  Front Right: Playback 28 [90%] [7.50dB] [on]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 25 [81%] [3.00dB] [on]
  Front Right: Playback 25 [81%] [3.00dB] [on]
Simple mixer control 'Mic Boost',0
  Capabilities: volume penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 3 [100%] [30.00dB]
  Front Right: 3 [100%] [30.00dB]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined cswitch cswitch-joined penum
  Playback channels: Mono
  Capture channels: Mono
  Mono: Playback [on] Capture [off]
Simple mixer control 'IEC958 Default PCM',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Beep',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 26 [84%] [4.50dB] [on]
  Front Right: Playback 26 [84%] [4.50dB] [on]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 46
  Front Left: Capture 46 [100%] [30.00dB] [on]
  Front Right: Capture 46 [100%] [30.00dB] [on]
Simple mixer control 'Capture',1
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 46
  Front Left: Capture 15 [33%] [-1.00dB] [off]
  Front Right: Capture 15 [33%] [-1.00dB] [off]
Simple mixer control 'Capture',2
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 46
  Front Left: Capture 11 [24%] [-5.00dB] [off]
  Front Right: Capture 11 [24%] [-5.00dB] [off]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Disabled'
Simple mixer control 'Input Source',0
  Capabilities: cenum
  Items: 'Mic' 'Line'
  Item0: 'Mic'
Simple mixer control 'Input Source',1
  Capabilities: cenum
  Items: 'Mic' 'Line'
  Item0: 'Mic'
Simple mixer control 'Input Source',2
  Capabilities: cenum
  Items: 'Mic' 'Line'
  Item0: 'Mic'

!!Alsactl output
!!-------------

--startcollapse--
state.NVidia {
 control.1 {
  iface MIXER
  name 'Speaker Playback Volume'
  value.0 64
  value.1 64
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 64'
   dbmin -6400
   dbmax 0
   dbvalue.0 0
   dbvalue.1 0
  }
 }
 control.2 {
  iface MIXER
  name 'Speaker Playback Switch'
  value.0 true
  value.1 true
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.3 {
  iface MIXER
  name 'Bass Speaker Playback Volume'
  value.0 50
  value.1 50
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 64'
   dbmin -6400
   dbmax 0
   dbvalue.0 -1400
   dbvalue.1 -1400
  }
 }
 control.4 {
  iface MIXER
  name 'Bass Speaker Playback Switch'
  value.0 true
  value.1 true
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.5 {
  iface MIXER
  name 'Headphone Playback Volume'
  value.0 64
  value.1 64
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 64'
   dbmin -6400
   dbmax 0
   dbvalue.0 0
   dbvalue.1 0
  }
 }
 control.6 {
  iface MIXER
  name 'Headphone Playback Switch'
  value.0 true
  value.1 true
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.7 {
  iface MIXER
  name 'Mic Playback Volume'
  value.0 25
  value.1 25
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 31'
   dbmin -3450
   dbmax 1200
   dbvalue.0 300
   dbvalue.1 300
  }
 }
 control.8 {
  iface MIXER
  name 'Mic Playback Switch'
  value.0 true
  value.1 true
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.9 {
  iface MIXER
  name 'Line Playback Volume'
  value.0 28
  value.1 28
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 31'
   dbmin -3450
   dbmax 1200
   dbvalue.0 750
   dbvalue.1 750
  }
 }
 control.10 {
  iface MIXER
  name 'Line Playback Switch'
  value.0 true
  value.1 true
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.11 {
  iface MIXER
  name 'Auto-Mute Mode'
  value Disabled
  comment {
   access 'read write'
   type ENUMERATED
   count 1
   item.0 Disabled
   item.1 Enabled
  }
 }
 control.12 {
  iface MIXER
  name 'Mic Boost Volume'
  value.0 3
  value.1 3
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 3'
   dbmin 0
   dbmax 3000
   dbvalue.0 3000
   dbvalue.1 3000
  }
 }
 control.13 {
  iface MIXER
  name 'Capture Switch'
  value.0 true
  value.1 true
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.14 {
  iface MIXER
  name 'Capture Switch'
  index 1
  value.0 false
  value.1 false
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.15 {
  iface MIXER
  name 'Capture Switch'
  index 2
  value.0 false
  value.1 false
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.16 {
  iface MIXER
  name 'Capture Volume'
  value.0 46
  value.1 46
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 46'
   dbmin -1600
   dbmax 3000
   dbvalue.0 3000
   dbvalue.1 3000
  }
 }
 control.17 {
  iface MIXER
  name 'Capture Volume'
  index 1
  value.0 15
  value.1 15
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 46'
   dbmin -1600
   dbmax 3000
   dbvalue.0 -100
   dbvalue.1 -100
  }
 }
 control.18 {
  iface MIXER
  name 'Capture Volume'
  index 2
  value.0 11
  value.1 11
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 46'
   dbmin -1600
   dbmax 3000
   dbvalue.0 -500
   dbvalue.1 -500
  }
 }
 control.19 {
  iface MIXER
  name 'Input Source'
  value Mic
  comment {
   access 'read write'
   type ENUMERATED
   count 1
   item.0 Mic
   item.1 Line
  }
 }
 control.20 {
  iface MIXER
  name 'Input Source'
  index 1
  value Mic
  comment {
   access 'read write'
   type ENUMERATED
   count 1
   item.0 Mic
   item.1 Line
  }
 }
 control.21 {
  iface MIXER
  name 'Input Source'
  index 2
  value Mic
  comment {
   access 'read write'
   type ENUMERATED
   count 1
   item.0 Mic
   item.1 Line
  }
 }
 control.22 {
  iface MIXER
  name 'IEC958 Playback Con Mask'
  value '0fff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
  comment {
   access read
   type IEC958
   count 1
  }
 }
 control.23 {
  iface MIXER
  name 'IEC958 Playback Pro Mask'
  value '0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
  comment {
   access read
   type IEC958
   count 1
  }
 }
 control.24 {
  iface MIXER
  name 'IEC958 Playback Default'
  value '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
  comment {
   access 'read write'
   type IEC958
   count 1
  }
 }
 control.25 {
  iface MIXER
  name 'IEC958 Playback Switch'
  value true
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.26 {
  iface MIXER
  name 'IEC958 Default PCM Playback Switch'
  value true
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.27 {
  iface MIXER
  name 'IEC958 Capture Switch'
  value false
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.28 {
  iface MIXER
  name 'IEC958 Capture Default'
  value '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
  comment {
   access read
   type IEC958
   count 1
  }
 }
 control.29 {
  iface MIXER
  name 'Beep Playback Volume'
  value.0 26
  value.1 26
  comment {
   access 'read write'
   type INTEGER
   count 2
   range '0 - 31'
   dbmin -3450
   dbmax 1200
   dbvalue.0 450
   dbvalue.1 450
  }
 }
 control.30 {
  iface MIXER
  name 'Beep Playback Switch'
  value.0 true
  value.1 true
  comment {
   access 'read write'
   type BOOLEAN
   count 2
  }
 }
 control.31 {
  iface MIXER
  name 'Master Playback Volume'
  value 64
  comment {
   access 'read write'
   type INTEGER
   count 1
   range '0 - 64'
   dbmin -6400
   dbmax 0
   dbvalue.0 0
  }
 }
 control.32 {
  iface MIXER
  name 'Master Playback Switch'
  value true
  comment {
   access 'read write'
   type BOOLEAN
   count 1
  }
 }
 control.33 {
  iface CARD
  name 'Headphone Jack'
  value false
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }
 control.34 {
  iface CARD
  name 'Line Jack'
  value false
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }
 control.35 {
  iface MIXER
  name 'PCM Playback Volume'
  value.0 255
  value.1 255
  comment {
   access 'read write user'
   type INTEGER
   count 2
   range '0 - 255'
   tlv '0000000100000008ffffec1400000014'
   dbmin -5100
   dbmax 0
   dbvalue.0 0
   dbvalue.1 0
  }
 }
}
--endcollapse--

!!All Loaded Modules
!!------------------

Module
nls_utf8
isofs
pci_stub
vboxpci
vboxnetadp
vboxnetflt
vboxdrv
michael_mic
arc4
vesafb
bnep
microcode
rfcomm
parport_pc
ppdev
binfmt_misc
snd_hda_codec_realtek
snd_hda_intel
snd_hda_codec
snd_hwdep
nvidia
snd_pcm
snd_seq_midi
snd_rawmidi
snd_seq_midi_event
snd_seq
snd_timer
snd_seq_device
snd
lib80211_crypt_tkip
i2c_nforce2
wl
shpchp
soundcore
snd_page_alloc
lp
parport
hid_apple
btusb
bluetooth
applesmc
mac_hid
usbhid
hid
lib80211
apple_bl
uvcvideo
videodev
input_polldev
dm_multipath
firewire_ohci
firewire_core
crc_itu_t
forcedeth
dm_raid45
xor
dm_mirror
dm_region_hash
dm_log

!!Sysfs Files
!!-----------

/sys/class/sound/hwC0D0/init_pin_configs:
0x14 0x012b4050
0x15 0x018b3020
0x16 0x400000f0
0x17 0x400000f0
0x18 0x90100141
0x19 0x90a00110
0x1a 0x90100140
0x1b 0x400000f0
0x1c 0x400000f0
0x1d 0x400000f0
0x1e 0x014be060
0x1f 0x01cbe030

/sys/class/sound/hwC0D0/driver_pin_configs:

/sys/class/sound/hwC0D0/user_pin_configs:

/sys/class/sound/hwC0D0/init_verbs:

!!ALSA/HDA dmesg
!!------------------

[ 8.349918] ACPI: PCI Interrupt Link [LAZA] enabled at IRQ 20
[ 8.349923] snd_hda_intel 0000:00:08.0: PCI INT A -> Link[LAZA] -> GSI 20 (level, low) -> IRQ 20
[ 8.349926] hda_intel: Disabling MSI
[ 8.349946] snd_hda_intel 0000:00:08.0: setting latency timer to 64
[ 8.621318] EXT4-fs (sda6): re-mounted. Opts: errors=remount-ro
[ 9.008640] hda_codec: ALC889A: BIOS auto-probing.
[ 9.008643] hda_codec: ALC889A: SKU not ready 0x400000f0
[ 9.333841] init: failsafe main process (942) killed by TERM signal
[ 10.168217] input: HDA NVidia Line as /devices/pci0000:00/0000:00:08.0/sound/card0/input9
[ 10.168342] input: HDA NVidia Headphone as /devices/pci0000:00/0000:00:08.0/sound/card0/input10
[ 10.234166] type=1400 audit(1335634091.547:8): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=1002 comm="apparmor_parser"

echo "options snd-hda-intel model=lenovo-sky" | sudo tee -a /etc/modprobe.d/alsa-base.conf

reboot to test

Source:
http://mac.linux.be/content/sound-imac-91-may-2009

Please try this procedure:

Step 1: Open a Terminal

Step 2: Run the following command (copy/paste command into the Terminal
and then hit <enter>)

gksudo gedit /etc/modprobe.d/alsa-base.conf

In the gedit editor, scroll down to the last lines of the alsa-base.conf
file and add these 2 lines to the end of the alsa-base.conf file (with
the file open inside the gedit editor!):

alias snd-card-0 snd-hda-intel
options snd-hda-intel model=lenovo-sky

Step 3: Reboot pc and retest sound using both headphones and speakers.
Test all audio jacks on the front and the back of your PC.

Step 4: If sound is still not working after a reboot, replace the lenovo-sky
model option with one of the model options below (for example: imac91
) and then reboot and retest sound again.

ALC882/883/885/888/889
======================
intel-alc889a
imac91
lenovo-sky

 auto auto-config reading BIOS (default)
 medion Medion Laptops
 medion-md2 Medion MD2
 3stack-dig 3-jack with SPDIF I/O
 6stack-dig 6-jack digital with SPDIF I/O
 arima Arima W820Di1
 targa Targa T8, MSI-1049 T8
 asus-a7j ASUS A7J
 asus-a7m ASUS A7M
 macpro MacPro support
 mb5 Macbook 5,1
 macmini3 Macmini 3,1
 mba21 Macbook Air 2,1
 mbp3 Macbook Pro rev3
 imac24 iMac 24'' with jack detection
 w2jc ASUS W2JC
 3stack-2ch-dig 3-jack with SPDIF I/O (ALC883)
 alc883-6stack-dig 6-jack digital with SPDIF I/O (ALC883)
 3stack-6ch 3-jack 6-channel
 3stack-6ch-dig 3-jack 6-channel with SPDIF I/O
 6stack-dig-demo 6-jack digital for Intel demo board
 acer Acer laptops (Travelmate 3012WTMi, Aspire 5600, etc)
 acer-aspire Acer Aspire 9810
 acer-aspire-4930g Acer Aspire 4930G
 acer-aspire-6530g Acer Aspire 6530G
 acer-aspire-7730g Acer Aspire 7730G
 acer-aspire-8930g Acer Aspire 8930G
 targa-dig Targa/MSI
 targa-2ch-dig Targa/MSI with 2-channel
 targa-8ch-dig Targa/MSI with 8-channel (MSI GX620)
 laptop-eapd 3-jack with SPDIF I/O and EAPD (Clevo M540JE, M550JE)
 lenovo-101e Lenovo 101E
 lenovo-nb0763 Lenovo NB0763
 lenovo-ms7195-dig Lenovo MS7195
 haier-w66 Haier W66
 3stack-hp HP machines with 3stack (Lucknow, Samba boards)
 6stack-dell Dell machines with 6stack (Inspiron 530)
 mitac Mitac 8252D
 clevo-m540r Clevo M540R (6ch + digital)
 clevo-m720 Clevo M720 laptop series
 fujitsu-pi2515 Fujitsu AMILO Pi2515
 fujitsu-xa3530 Fujitsu AMILO XA3530
 3stack-6ch-intel Intel DG33* boards
 intel-x58 Intel DX58 with ALC889
 asus-p5q ASUS P5Q-EM boards
 mb31 MacBook 3,1
 sony-vaio-tt Sony VAIO TT

Only use and test 1 model option at a time between each reboot! Do not
mix several model options at the same time in the alsa-base.conf file.

@Mark
You're solution work well for me using lenovo-sky model
http://www.alsa-project.org/db/?f=e0e5440634f26ef8e37740520e8e9062878c68df

Many thanks

Pascal

Don't forget to thank ActionParsnip (Andrew) as well. :-p

He gave the same solution.