maybe its different codec is a variant exists between ALC269.
send me your codec_dump (linux).
Use any linux livecd so the terminal and run the command:
cd ~ / Desktop && mkdir CodecDump && c is in / proc / asound / card * / codec # *;'s f = "$ {c / \ / * card / card};" cat "$ c"> CodecDump / $ {f / / \ / / -}. txt; && zip-r done CodecDump.zip CodecDump
send me the generated file on the desktop.
before you try this kext: http://cl.ly/3Q3v1N0K2w3r