Sound broken on Gutsy LiveCD for Intel HDA with chipset "Realtek ALC268"

Here is full "alsa-info.sh" output for my machine:

   1. ################################
   2. ALSA Information Script v 0.4.34
   3. ################################
   4.
   5. Script ran on: Sat Oct 20 14:03:49 UTC 2007
   6.
   7.
   8. Linux Distribution
   9. ------------------
  10.
  11. Ubuntu 7.10 \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 7.10"
  12.
  13.
  14. Kernel Information
  15. ------------------
  16.
  17. Kernel release: 2.6.22-14-generic
  18. Operating System: GNU/Linux
  19. Architecture: i686
  20. Processor: unknown
  21. SMP Enabled: Yes
  22.
  23.
  24. ALSA Version
  25. ------------
  26.
  27. Driver version: 1.0.14
  28. Library version:
  29. Utilities version: 1.0.14
  30.
  31.
  32. Loaded ALSA modules
  33. -------------------
  34.
  35. snd_hda_intel
  36.
  37.
  38. Soundcards recognised by ALSA
  39. -----------------------------
  40.
  41. 0 [Intel ]: HDA-Intel - HDA Intel
  42. HDA Intel at 0xf8700000 irq 23
  43.
  44.
  45. PCI Soundcards installed in the system
  46. --------------------------------------
  47.
  48. 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
  49.
  50.
  51. Advanced information - PCI Vendor/Device/Susbsystem ID's
  52. --------------------------------------------------------
  53.
  54. 00:1b.0 0403: 8086:284b (rev 03)
  55. Subsystem: 103c:30cc
  56.
  57.
  58. Modprobe options (Sound related)
  59. --------------------------------
  60.
  61. snd-bt87x: index=-2
  62. snd-atiixp-modem: index=-2
  63. snd-intel8x0m: index=-2
  64. snd-via82xx-modem: index=-2
  65. snd-usb-audio: index=-2
  66. snd-usb-usx2y: index=-2
  67. snd-usb-caiaq: index=-2
  68. snd-cmipci: mpu_port=0x330 fm_port=0x388
  69.
  70.
  71. Loaded sound module options
  72. --------------------------
  73.
  74. Module: snd_hda_intel
  75. enable : N
  76. id : <NULL>
  77. index : -1
  78. model : <NULL>
  79. position_fix : 0
  80. probe_mask : -1
  81. single_cmd : N
  82.
  83.
  84. HDA-Intel Codec information
  85. ---------------------------
  86.
  87. Codec: Realtek ID 268
  88. Address: 0
  89. Vendor Id: 0x10ec0268
  90. Subsystem Id: 0x103c30cc
  91. Revision Id: 0x100003
  92. Default PCM:
  93. rates [0x560]: 44100 48000 96000 192000
  94. bits [0xe]: 16 20 24
  95. formats [0x1]: PCM
  96. Default Amp-In caps: N/A
  97. Default Amp-Out caps: N/A
  98. Node 0x02 [Audio Output] wcaps 0x1d: Stereo Amp-Out
  99. Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
 100. Amp-Out vals: [0x34 0x34]
 101. PCM:
 102. rates [0x560]: 44100 48000 96000 192000
 103. bits [0xe]: 16 20 24
 104. formats [0x1]: PCM
 105. Node 0x03 [Audio Output] wcaps 0x1d: Stereo Amp-Out
 106. Amp-Out caps: ofs=0x40, nsteps=0x40, stepsize=0x03, mute=0
 107. Amp-Out vals: [0x40 0x40]
 108. PCM:
 109. rates [0x560]: 44100 48000 96000 192000
 110. bits [0xe]: 16 20 24
 111. formats [0x1]: PCM
 112. Node 0x04 [Vendor Defined Widget] wcaps 0xf00000: Mono
 113. Node 0x05 [Vendor Defined Widget] wc...

Same problem with same card here.
Sound works in vista, but not in ubuntu (7.10).
nothing useful to add I'm afraid.

There are workarounds for this at https://wiki.ubuntu.com/Gutsy_Intel_HD_Audio_Controller.

Most of them seem to involve installing linux-backports-modules and modding /etc/modprobe.d/alsa-base.