Jump to content

[SOLVED] AppleHDA Audio stopped working since update to 10.13.6 - Optiplex 3020 MT with GTX 1050 TI

Recommended Posts

I certainly can the next time it happens. I am connected over DP. When I was on 10.13.5 it worked fine. After the upgrade to 10.13.6 just intermittent. I was looking through the IOReg and it references the connector type as HDMI (<00 08 00 00>) and further down it references the dp device as C. I don’t know how to change the connector type to <00 04 00 00> which will identify it as a DP connector not HDMI. Maybe that would help. Also all references in IOReg for device is for HDAU are <00 07 00 00> but I think I need it to be <00 03 00 00> which makes the audio work natively with AppleHDA over the HD4600 DP port. Am I thinking on the right lines or no where near?

Share this post

Link to post
Share on other sites

You can ignore the layout-id. The developer of AppleALC.kext has make a workaround to support Mojave since it had dropped a lot of the layout-id. See here




Added basic 10.14 compatibility via masking real layout-id

AppleALC selected layout-id is now shown as alc-layout-id in ioreg

Overriden layout-id can be passed asapple-layout-id (alcaaplid=X)



I'm not familiar with patching connector type for Nvidia. If you're switching over to HD4600, that's should be easy to do and you should use layout-id=15 for HDEF/HDAU

Share this post

Link to post
Share on other sites

The DSDT hasn't made any difference unfortunately. I downloaded a voodooHDA kext and put that in EFI/Clover/Kexts and that loads up the audio. Not ideal or how I wanted it but I think I'll do that until I update to Mojave. The only side effect is I seem to get some odd graphics anomalies, flickers and things from time to time

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now