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Just moving from High Sierra via Clover to 10.15.4 via OC 0.5.9. Bought a new SSD, so I didn't mess with my stable High Sierra install. After install, I put it in an enclosure, so I can boot via USB for further testing. I have the same system as yours, used your OC folder from your git-hub...

I guess you mean leave it where the script puts it (/L/E)? Just ran the script again with the original installed AppleHDA.kext reinstalled in /S/L/E. I'll update the kext cache and reboot twice and see how it goes..... Ok, rebooted twice and no audio. Then removed codeccommander and then...

Thanks, restored my backup of the originally installed kext.

Ok, so I've got this far: -Found the original kext in the in the install image, deleted the one from /S/L/E and installed (via terminal) the original install image one. -Ran the script to generate the AppleHDA_ALC256.kext -Copied AppleHDA_ALC256.kext to the desktop and edited the .plist with...

Thanks! I'll give it a go!

Thanks, maybe it's possible to use CloverHDA? But I'm not sure what I need to do to try it out. Can anyone help me out with instruction?

Yay, that was it. Removed AppleALC.kext and we are looking good! Just have to get audio back now....

I'll give it at try later today.

I'm not sure if it would hint at a solution, but I've reinstalled the OS a couple of times, (didn't format, just reinstalled over the top) and the first boot after the reinstall was working normally.

Yep, 40-60%.

Didn't seem to help. Still the same problem...

Thanks, I'll give it a try when I get back home. Was hoping it was something stupid I did!

Good to know. Thanks. Also, after a fresh install, the first boot seems to have proper power management, but on successive boots, it idles at around 3.5 GHz! Any ideas?

Thanks, I've pretty much done the same thing, but no matter what, I can't get the kexts to install correctly in the system drive, either via kext utility or manually via terminal, I still get "Kext with invalid signatured (-67050) allowed...." when rebuilding the cache.

Did you find the solution to your Bluetooth issue? I just installed the same card.

I seem to have fixed something up. I reinstalled the OS (over the top of the existing OS, not a reformat) looks like power management is working better at least. Frequency actually can get under 2.0 and temp idles around 50C now. But I still can get the kexts to install properly to...

Was the Pre-Configuration you did just referring to the BIOS settings? I have the same specs as you (but Hynix SSD, formatted to 4k sector size), also using the the-darkvoid's files, but my power management doesn't seem to be working properly. Did you install the-darkvoid's kext's to your...

Files attached. Thanks!

Clean boot.

Sorry, I need a little hand holding. I deleted all of the kexts I installed in /Library/Extensions then sudo kextcache -i / Then reinstalled them, adding FakeSMC.kext but I am still seeing the same output from sudo kextcache -i /