Wohoooo....
EMlyDinEsH, i'm following your guide for patching AppleHDA.kext in my installation, and it works!!
when i play a song through my internal speaker then plug-in my earphone, the sound automatically routed to my earphone.
last time with VodooHDA, i can't get that luxury. i need to manually switched in sound pref-pane.
so far, i'm testing for an output (internal speaker and headphone jack).
haven't got a chance to test for mic.
just in case someone else needed for his/her Thinkpad T430, the patched along with my scrapfiles during the process can be found on attachment (AppleHDA_T430_ML_1084_patching.zip). Installed the AppleHDA.kext from the download, and modified the DSDT in the installation with guide in the first page, then you should be set.
my thinkpad is T430 2349-A17 with mountain lion 10.8.4 installed using myHack method (myHack-3.2-BETA-8).
again, thanks so much EMlyDinEsH for putting all information into one easy to follow post.
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audio issue after sleep (internal speaker) can be fixed using IOAudioFamily.kext from this post
AppleHDA_T430_ML_1084_patching.zip