Jump to content

Apple ALC Increases boot time for 4-5 minutes

1 post in this topic

Recommended Posts

Hello, I have successfully installed macOS 10.13.6 with Opencore and everything works flawlessly expect audio. I am using appleALC with layout 11 for my ADI1984 onboard audio. However when I try boot it gets stuck at this: 

busy timeout [0], (60s): 'IOHDACodecFucntion' , 'IOHDACodecFucntion' , 'IOHDACodecFucntion' , 'IOHDACodecFucntion' ,
busy timeout [1], (60s): 'IOHDACodecFucntion' , 'IOHDACodecFucntion' , 'IOHDACodecFucntion' , 'IOHDACodecFucntion' ,
busy timeout [2], (60s): 'IOHDACodecFucntion' , 'IOHDACodecFucntion' , 'IOHDACodecFucntion' , 'IOHDACodecFucntion' ,
busy timeout [3], (60s): 'IOHDACodecFucntion' , 'IOHDACodecFucntion' , 'IOHDACodecFucntion' , 'IOHDACodecFucntion' ,

Eventually the system boots after 4-5 minutes and the sound is working fine except some weird distortion. For instance if I go to system preferences > sound > sound effects and try to play a sound the first time It will have this buzzing. If I click the same sound effect continuously for 3 or more times, the audio is perfect. (I have attached a recording of the distortion) I am sure its not my speakers that are causing this,

because with windows it works fine. 


I guess the delay occurs because AppleHDA fails to match my HDMI ports and get GPU audio (or something similar, I am not sure). I have no clue why the sound is distorted since it comes from my onboard card. Note that even with VoodooHDA the distortion existed but I had no delay. When I used clover though, voodoohda worked perfectly. 



Can someone tell me how to fix the delay and the distortion? I don't really care about HDMI audio, only the delay concerns me. 


I can upload my EFI or IOREG if that helps. 


My specs are:

Dell Optiplex 330

Intel Xeon E3120 (wolfdale)


MSI GT 210 


Any help would be appreciated. 

Sound distortion.m4a

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...