Try this one
Hi , unfortunately with this ALC268.kext i have no sound from speakers too, and this time it seems mic is not working (tapping near the mic i don't see the meter moving up).
Laptop is Acer Aspire 7720G
(white, similar to 5920G but different in audio codec and in other things it seems...since it has not ALC888 codec, like 5920).
I still have problems with sleep. If, for example, i put computer in sleep with ac.power and i resume with battery , it doesn't resume(black screen).
About audio, i have attached my codec pin configuration. I have heard that perhaps this codec needs an unmute command to produce sound ... dunno if it's real. I had it working in 10.5.6 with Taruga patcher (oh how nice it was... shame there is nothing similar in snow!)