I've found a dirty fix to make sound available again:
You have to obtain kernel source and remove or comment line 17138 and
recompile it:
alsa-kernel/pci/hda/patch-realtek.c:17138,
{ .id = 0x10ec0272, .name = "ALC272", .patch = patch_alc662 }
More info: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4575
** Bug watch added: ALSA Bug Tracker #4575
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4575
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Realtek ALC272 not working in 9.04 but its working under 8.10
https://bugs.launchpad.net/bugs/389040
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