In a commit earlier today, Cola-coder (aka Ithamar) submitted a working, as in playback, Intel HDA driver to Haiku's source. Since that first commit he has already updated it to remove the distorted audio he first had. He recently resumed his work on the driver (it was actually started a long time ago) and this is the first publicly available version, quite early code, so test at your own peril. And if you do test it, as usual, don't forget to provide him with feedback, in order to improve the driver.

Great job buddy :)