I followed the steps in this guide but still am getting "no output/input devices found" in the sound section of System Preferences. I've run the command file twice now. I can see the realtekALC.kext file in my EFI partition, so I know that part worked.
Prior to using this guide, after upgrading to Sierra, I tried to use MultiBeast to get audio working. Of course, that didn't work either.
My system specs: MacOS Sierra 10.12, Gigabyte GA-Z87-HD3 motherboard, i5-4670 processor, PowerColor Radeon HD 7850 1GB video card, ALC892 audio chipset.
I've attached the log/text from running the audio_cloverALC-120_v1.0b0.command file. I'm new to all of this, and think I might be missing something obvious. Audio worked fine under El Capitan.