[Unsolved] No device present - 300 series Realtek 892

[xoplague]

Moved here

 

[toleda]

See No Audio Devices - AppleHDA Realtek Audio/Post #1/Problem Reporting.
Post to thread linked with requested files attached.

 

[xoplague]

Additional system information

 

[xoplague]

8:583  0:000   - [02]: AppleHDA (10.12-AppleHDA/Realtek ALC...) :: BinPatch :: [OS: 10.13.5 | MatchOS: All | MatchBuild: All] ==> allowed
8:583  0:000   - [03]: AppleHDA (10.9-10.12-AppleHDA/Realtek ALC892) :: BinPatch :: [OS: 10.13.5 | MatchOS: All | MatchBuild: All] ==> allowed

 

[xoplague]

Reading through your High Sierra guide again, I realized I initially did not catch:

1. √ H310 / B360 / H370 / Q370 Audio Device ID Patch
   
   Reattempted… no audio device

 

[xoplague]

It may be worth noting that the pre-install process fails at

1. IOReg/Search: CodecDevice (if CodecDevice present, proceed to 8. Realtek Codec)

Despite applying the Z370 patch (this was confusing initially… i.e.: 300 series VS k-lake z370)

Just now I have cleared CMOS with battery removal in an attempt to reset audio controller. I am not aware of what else might prevent the detection of the audio hardware…

1. Boot flag: -x?, no
2. Boot Installer USB?, no
3. BIOS/Peripherals/HD Audio/disabled?, no(?)
4. Reset codec, done
5. Defective codec?, ???
6. Linux/Windows audio?, yes
7. RMA mother board?, yes

 

[toleda]

See Post #2

 

[xoplague]

moved