- Apr 13, 2016
- Gigabyte GA-Z170X-UD 5TH
- Core i7 6700k Skylake
- GTX 980 TI OC Windforce
- Mobile Phone
Ok. I was able to resolve my issue by doing the following:
- Installed a fresh installation of Sierra on a spare drive I had laying around.
- After booting into my fresh install via the USB installer, I fired up MultiBeast 9.0.0 and installed Quick Start-> UEFI Boot Mode including Clover v2.3..., FakeSMC..., System Definition iMac 14,2, plus I added ALC1150 and 100 Series Audio from the Drivers->Audio tab. Clicked Build, Install.
- Rebooted directly from my freshly installed Sierra with Nvidia drivers disabled (nv_disable=1) to avoid any video problems
- Checked my System Preferences -> Sound and I could not select any output devices.
- Installed the Nvidia web drivers for Sierra build 16A323 and rebooted
- Checked my System Preferences -> Sound thinking I would have to fire up the audio_cloverALC-120_v1.0b0 script but now i could select my output devices including Internal Speakers. I also could hear audio perfectly without the static from the rear audio jack.
- Thinking I had a good config.plist file I could swap with my misbehaving installation of Sierra, I rebooted back to my original drive.
- Checking my System Preferences -> Sound showed the correct output devices AND audio could be heard without the static issue on the rear audio jack.
My hunch: I'm betting that the installing of the Nvidia web drivers rebuilt the kext caches or something else that MultiBeast did not on the fresh install. This in turn reset the audio hardware to work when I rebooted back into my original configuration. Regardless, I'm good to go now. Thanks @In-N-Out and @jrii for the help and pointers.
I tried this complete process and did not work for me still having crackling sound but do see 4 options one being internal speakers and that's where I get crackling from. Any other suggestions? P.s I used exact same bios as you for multibeast. I also tried the other guys method and that didn't work either.