Gutsy's microphone input doesn't work - Feisty's is confirmed working.
Gutsy's headphone output doesn't work (speaker mute does) - Feisty's is 
confirmed working.

Comparison of the HDA codec reports of /proc/asound/card0/codec#0 shows
the significant differences are:

$ diff -y --left-column Feisty/codec#0 Gutsy/codec#0
Codec: SigmaTel STAC9872AK                                    | Codec: SigmaTel 
ID 7662
Address: 0
Vendor Id: 0x83847662
Subsystem Id: 0x104d0c00
Revision Id: 0x100201
                                                              > No Modem 
Function Group found
Node 0x07 [Audio Selector] wcaps 0x300903: Stereo Amp-In
  Amp-In caps: N/A
  Amp-In vals:  [0x00 0x00]                                   |   Amp-In vals:  
[0x80 0x80]
  Connection: 1
     0x0e
Node 0x09 [Audio Selector] wcaps 0x300903: Stereo Amp-In
  Amp-In caps: N/A
  Amp-In vals:  [0x0d 0x0d]                                   |   Amp-In vals:  
[0x0f 0x0f]
  Connection: 1
     0x15
Node 0x0a [Pin Complex] wcaps 0x400181: Stereo
  Pincap 0x08173c: IN OUT HP Detect
  Pin Default 0x02211020: [Jack] HP Out at Ext Front
    Conn = 1/8, Color = Black
  Pin-ctls: 0xc0: OUT HP                                      |   Pin-ctls: 
0x00:
  Connection: 1
     0x02
Node 0x0e [Pin Complex] wcaps 0x400081: Stereo
  Pincap 0x0824: IN Detect
  Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
    Conn = 1/8, Color = Black
  Pin-ctls: 0x20: IN                                          |   Pin-ctls: 
0x00:
Node 0x14 [Pin Complex] wcaps 0x400001: Stereo
  Pincap 0x0820: IN
  Pin Default 0x90a7014e: [Fixed] Mic at Int N/A
    Conn = Analog, Color = Unknown
  Pin-ctls: 0x20: IN                                          |   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]                                  |   Amp-Out vals: 
 [0x04 0x04]
  Connection: 4
     0x0a 0x0d 0x14* 0x02                                     |      0x0a 0x0d* 
0x14 0x02


** Attachment added: "Difference in codec reports between Feisty & Gutsy"
   http://launchpadlibrarian.net/9094779/HDA-Codec-Feisty-vs-Gutsy.diff

-- 
[Gutsy] Tribe-5 64-bit LiveCD failure report for Sony Vaio VGN-FE41Z
https://bugs.launchpad.net/bugs/136807
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