Software Update: run same script after update restart.Bootloaders: Chimera, Chameleon, Clover.Run the same script to restore audio after Software Update. New script detects the codec and patches the native AppleHDA.kext for ALC onboard audio. cloverALC/Clover patched– automatically detects codec and installs all audio files and patches for ALC onboard audio.
Realtek ALC AppleHDA Audio Patch Methods v2 – select one
Audio_IDs: 1, 2 and 3 require HDMI audio dsdt edits/ssdts for HDMI audio.Audio_IDs: 1 and 2 support analog 5.1 surround sound, 3 does not.Audio_ID: 3 – 3/5/6 port Realtek ALC onboard audio and HD3K/HD4K/AMD/Nvidia HDMI audio.Audio_ID: 2 – 3 port Realtek ALC onboard audio and HD5K/AMD/Nvidia HDMI audio.Audio_ID: 1 – 5/6 port Realtek ALC onboard audio and HD5K/AMD/Nvidia HDMI audio.Supported Audio-IDs (Audio_ID = layout-id), select one.
So are Kexts, Technically Kexts must have 755 permissions and owned by root:wheel, When kexts are failed to load, You may have to fix kexts permissions manually as described in upcoming paragraphs.For Realtek ALC885 through ALC1150 on board audio codecsĮnables Realtek ALC on board audio for Intel motherboards running Yosemite. Every file and folder on your Mac comes with an associated set of permissions. They are designed so that certain programs can not tamper into system files they have no business with and modify it. Permissions on macOS are used to keep your files secure. Kexts needs special file system Permissions to work in macOS, without correct permissions Kexts will not be loaded by macOS.
Users can install Kexts /S/L/E by disabling System Integrity Protection or Kexts can be installed to /Library/Extensions folder.
Users were allowed to install kexts to /S/L/E folder in OS X Yosemite and previous Mac OS X Versions but starting from OS X EL Capitan Apple restricts write access to many system folders including /System/Library/Extensions folder. System kexts are usually found in /System/Library/Extensions folder (Shortly /S/L/E) but most third-party kexts can be found in /Library/Extensions folder (Shortly /L/E).