[solved] ALC256 no output devices found

[vinhtq115]

No "Problem Reporting" files attached.
Read FAQ, "Problem Reporting" again. Carefully. Attach all requested files/output.
https://www.tonymacx86.com/threads/faq-read-first-laptop-frequent-questions.164990/
Use the gen_debug.sh tool mentioned in the FAQ, that way it is less likely you'll omit something.

Here you go. This time I will upload both debug files, one with your original config, one with my customized one.

 

[fivos1996]

Here you go. This time I will upload both debug files, one with your original config, one with my customized one.

Have you tried layout-id 3?

 

[vinhtq115]

Have you tried layout-id 3?

Not yet. Isn't layout-id 3 not supported for ALC256?

 

[fivos1996]

Not yet. Isn't layout-id 3 not supported for ALC256?

I believe it is. It works with my ALC282 and AppleALC.

 

[vinhtq115]

I believe it is. It works with my ALC282 and AppleALC.

According to AppleALC's GitHub, layout 11, 13, 28, 56 are supported.

 

[RehabMan]

Have you tried layout-id 3?

According to AppleALC's GitHub, layout 11, 13, 28, 56 are supported.

That is correct.
3 not valid for ALC256 (keep in mind these layout-id values are the arbitrary choice of the person creating the XML).

Note:

NUC6i7KYK:applealc.git rehabman$ ls -l Resources/ALC256/layout*
-rw-r--r--  1 rehabman  staff  32712 Sep  6 08:52 Resources/ALC256/layout11.xml
-rw-r--r--  1 rehabman  staff   1818 Oct 29 11:16 Resources/ALC256/layout11.xml.zlib
-rw-r--r--  1 rehabman  staff  32712 Apr 24  2018 Resources/ALC256/layout13.xml
-rw-r--r--  1 rehabman  staff   1818 Oct 29 11:16 Resources/ALC256/layout13.xml.zlib
-rw-r--r--  1 rehabman  staff  29234 Apr 24  2018 Resources/ALC256/layout28.xml
-rw-r--r--  1 rehabman  staff   3593 Oct 29 11:16 Resources/ALC256/layout28.xml.zlib
-rw-r--r--  1 rehabman  staff  32712 Apr 24  2018 Resources/ALC256/layout56.xml
-rw-r--r--  1 rehabman  staff   1818 Oct 29 11:16 Resources/ALC256/layout56.xml.zlib

 

[RehabMan]

Here you go. This time I will upload both debug files, one with your original config, one with my customized one.

Maybe you mistakenly deleted AppleHDA.kext.
Run the macOS installer to restore all kexts.

 

[fivos1996]

Maybe you mistakenly deleted AppleHDA.kext.
Run the macOS installer to restore all kexts.

His kextstat shows AppleHDA loaded if I'm not mistaken.

 130    0 0xffffff7f81f13000 0x1d000    0x1d000    com.apple.driver.AppleHDAController (282.10) 41CE33FB-FED7-36D3-A3DF-03B036329B10 <129 93 90 13 8 7 6 5 3 1>

But he may have installed a wrong one.

 

[vinhtq115]

Maybe you mistakenly deleted AppleHDA.kext.
Run the macOS installer to restore all kexts.

His kextstat shows AppleHDA loaded if I'm not mistaken.

 130    0 0xffffff7f81f13000 0x1d000    0x1d000    com.apple.driver.AppleHDAController (282.10) 41CE33FB-FED7-36D3-A3DF-03B036329B10 <129 93 90 13 8 7 6 5 3 1>

But he may have installed a wrong one.

Reinstalled AppleHDA using macOS Installer but I still got no sound. About that earlier AppleHDA, I downloaded it from https://www.tonymacx86.com/threads/alc256-no-output-devices-found.265232/page-2#post-1854227

Edit: idk if this is normal or not but sometimes, AppleHDA appears in kextstat|grep "HDA" but sometimes it doesn't.

Update: problem solved. For anyone having the same problem, set Inject in config.plist/Audio to No and change the bottom part like the screenshot. Install CodecCommander.kext to fix headphones noise.

 

[RehabMan]

His kextstat shows AppleHDA loaded if I'm not mistaken.

 130    0 0xffffff7f81f13000 0x1d000    0x1d000    com.apple.driver.AppleHDAController (282.10) 41CE33FB-FED7-36D3-A3DF-03B036329B10 <129 93 90 13 8 7 6 5 3 1>

But he may have installed a wrong one.

The kextstat output only shows whether a kext is "loaded" or not.
Must use ioreg to determine whether the kext has actually "started".