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No audio on Dell 3471 with Realtek 3820

moshes said:
Tried one more time with alcid=13. No difference. Lilu log 5:08.
View attachment 578780
Click to expand...
Let's try the attached version of AppleALC with alcid=12 only or 14 only. An earlier IOReg shows that macOS is detecting nVidia codec ID 0x10de0ac0, so I'm trying to adapt AppleALC to this ID.
 

Attachments

  • AppleALC.kext.zip
    1.4 MB · Views: 3
alcid=12. ioreg same. Child processes not populated.
1708383331861.jpeg
 

Attachments

  • Lilu_1.6.8_23.3.txt
    56.5 KB · Views: 2
Booted with alcid=14. Same story.
1708383625366.jpeg
 

Attachments

  • Lilu_1.6.8_23.3.txt
    56.5 KB · Views: 4

Attachments

  • SSDT-RTC_TIMR-fix.aml
    474 bytes · Views: 3
  • SSDT-HPET.aml
    124 bytes · Views: 5
Interesting, and progress.
I installed both. I had other SSDTs originally, but it seemed unnecessary. While my CPU is allegedly CoffeeLake, it is really "KabyLake Refresh". But I appreciate your diligence and clearly moving along in the right direction!
The Sound setting now recognizes my HDMI monitor. It never has before. But this monitor doesn't have internal sound - it has a soundbar that connects via headphones input. So that doesn't work directly, but it means something.

1708548684502.jpeg


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Attachments

  • Lilu_1.6.8_23.3.txt
    270.2 KB · Views: 2
Oops. Changing alcid now.
 
That did it!!!
Using alcid=13 (rather then the 14 of the previous cycle) I get this
1708549381404.jpeg


1708549464458.jpeg

1708549505808.jpeg


1708549549914.jpeg


1708549578908.jpeg
 
Lilu log using alcid=13
I'm pretty dog gone flabbergasted. And a little chastened that it took this much time of yours. But whoop de doo! I've been fooling with this for a long time. Obviously I didn't think it was this kind of issue. Sigh. Can I do something for you? A tribute letter to an employer?
 

Attachments

  • Lilu_1.6.8_23.3.txt
    392.7 KB · Views: 4
Last edited:
moshes said:
Lilu log using alcid=13
I'm pretty dog gone flabbergasted. And a little chastened that it took this much time of yours. But whoop de doo! I've been fooling with this for a long time. Obviously I didn't think it was this kind of issue. Sigh. Can I do something for you? A tribute letter to an employer?
Click to expand...
Awesome -- and let's actually thank @sammyk77 for these SSDTs!

Now there is one thing we need to do. We need to determine exactly which part of the SSDT fixed the problem.

Let's do the following:
  1. Disable or delete SSDT-RTC_TIMR-fix.aml
  2. Reboot the system (keep SSDT-HPET.aml enabled)
  3. Does audio still work?
  4. If not, then add SSDT-RTC-fix.aml (attached) and reboot
  5. Does audio still work?
  6. If not, then add SSDT-TIMR-fix.aml (attached) and reboot
  7. Does audio still work?
 

Attachments

  • SSDT-RTC-fix.aml
    330 bytes · Views: 3
  • SSDT-TIMR-fix.aml
    339 bytes · Views: 2
  • SSDT-HPET.aml
    124 bytes · Views: 4
OK. Are the SSDT's personally constructed? Or generic...
I inactivated the 1st SSDT-RTC_TIMR-fix.aml. Sound failed.
I installed SSDT-RTC-fix.
Sound worked!

Do I care to carry this further with the timer question? I don't believe I have a timer issue/
 
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