"No audio devices" - ThinkCentre M55/ADI1983.

[Taeraresh]

Hi y'all,

I've got El Capitan working nicely (after installing the NullCPUPowerManagement kext), but I can't figure out how to get the audio to work.
I'm using a ThinkCentre M55 (Core2 Duo), and the Lenovo specifications page says:
"Integrated High Definition (HD) PCI AC'97 2.3 compliant codec"
"ADI1983 HD CODEC"

In Mavericks and Yosemite, I used VoodooHDA, but I can't remember what version, unfortunately. It also doesn't seem to have been updated for 10.11 yet, and the installer pops up a 'this may break your system' warning, which scares me off from installing it.

I've tried running the script linked from the installation guide, and I get the following (I suspect my hardware isn't the correct type). My audio is enabled in the BIOS.

File: audio_cloverALC-110.command_v1.0j
EFI partition is mounted
System Integrity Protection status: enabled (Custom Configuration).

Configuration:
Apple Internal: disabled
Kext Signing: disabled
Filesystem Protections: disabled
Debugging Restrictions: enabled
DTrace Restrictions: enabled
NVRAM Protections: enabled

This is an unsupported configuration, likely to break in the future and leave your machine in an unknown state.

OK to patch
Error: no IOReg/HDEF; BIOS/audio/disabled or ACPI problem
No system files were changed
To save a Copy of this Terminal session: Terminal/Shell/Export Text As ...
logout
Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[Process completed]

Thanks for all the great guides and tools, everyone. It's nice being able to run MacOS, even if it does take some work to get everything functioning.

 

[belltech123]

I think the Unibeast for SL shows ADI1986, so your codec might be unsupported. Try getting around with a sound card on pci ports or a USB one.

 

[Taeraresh]

I think the Unibeast for SL shows ADI1986, so your codec might be unsupported. Try getting around with a sound card on pci ports or a USB one.

Probably a good solution. I went ahead and installed VoodooHDA, despite the scary warning, and it seems to be working. The audio is really quiet for some reason, but it does work.