ALC283 is the same as my Lenovo u430. You can use AppleHDA_ALC283.kext in my u430 repo...
https://github.com/RehabMan/Lenovo-U430-Touch-DSDT-Patch
Requirements:
- Clover bootloader
- config.plist must have the four AppleHDA patches from my config.plist in the repo
- AppleHDA.kext must be vanilla
- CodecCommander.kext installed to /S/L/E:
https://github.com/RehabMan/EAPD-Codec-Commander
- AppleHDA_ALC283.kext installed to /S/L/E
- rebuild cache following the procedure detailed in the u430 guide:
http://www.tonymacx86.com/yosemite-...ideapad-u330-u430-u530-using-clover-uefi.html
- DSDT patches "IRQ Fix" and "Audio Layout 12", with layout-id changed from 12 to 86.
Note: There is also the alternate_audio branch (at same repo) that uses layout-id=3.