I've extracted the dsdt for my Gigabyte EP35-DS3P rev 2.1 motherboard with the latest F6 BIOS.
I tried to patch it with DSDT Editor, first applied the Gigabyte EP35-DS3P patch, then the ALC889A patch - according to tonymacx86's DSDT GUIDE - and the resulting dsdt.aml works under Lion 10.7...