No Sound - Realtek ALC AppleHDA [Guide]

[toleda]

Here goes. These files were made with an untouched AppleHDA Extension and the linked config.plist file and of course the SSDT file you linked

Your dsdt does not have HDEF, Clover edit.
Add the Rename ALZA to HDEF patch back.
Replace the ssdt with the attached.
Reply with new files.

 

[lucavb]

Added the patch back. Renamed and replaced the old SSDT file with the new one.

 

[toleda]

Added the patch back.

No HDMI display connected?
Run audio_cloverALC-100.command (v1.0.4), make a copy of terminal output and attach with other files.

 

[lucavb]

My screen is connected via display port since it's a 4k display. It does have speakers, which are working just fine under windows. The sound preference does show neither hdmi nor dp. After running the command the sound preference shows me the 4 options i had before (internal speakers, 2x line out, digital out).

I also plugged in speakers into the green head phone jack in the back. Oh and iTunes is refusing to playback a file. The bar just stands still at 0:00.

 

[toleda]

iTunes is refusing to playback a file. The bar just stands still at 0:00.

Repair permissions and rebuild kernel cache.

 

[lucavb]

I had the disk utility fix the permissions on my boot drive. I ran both those commands:


sudo kextcache -system-prelinked-kernel
sudo kextcache -m /System/Library/Caches/com.apple.kext.caches/Startup/Extensions.mkext /System/Library/Extensions


Both telling me kindly that


kext-dev-mode allowing invalid signature -67054 0xFFFFFFFFFFFEFA12 for kext AppleHDA.kext


was noticed and I hope allowed due to the boot argument. The sound preference is still showing all devices besides the HDMI/DP audio but none of them work and iTunes is still refusing.

 

[toleda]

allowed due to the boot argument.

The message is normal. IOReg does not show iTunes running or an audio device selected. Attach a screenshot of DCPIManager/Status.

 

[lucavb]

Ok here is the screen shot. In the interest of full disclosure I also made new copies of IOReg with iTunes open and at least pretending to play back.

 

[zonglars]

Welp, I uninstalled Android Studio a few days ago, and haven't had any issues since. (will be updating my post with this note).

Very strange... like, hair-pullingly.

Hooked up Logitech C270 Webcam... it's broken again...
(Original post with full details of issue: http://www.tonymacx86.com/audio/143750-no-sound-realtek-alc-applehda-guide-11.html#post961065)

UPDATE
Huh... never mind, seems to be working fine; had a momentary issue after I installed it, nothing since.

 

[velos]

Ok here is the screen shot. In the interest of full disclosure I also made new copies of IOReg with iTunes open and at least pretending to play back.

I have exact the same problem except having radeon 6850 and direct green output connection to loudspeakers.