My thinkpad T450 has codec ALC3232/292, which is what the cat command returned when booted the T450 in linux. Im using opencore 0.7.0.
There are two ALCPlugFixes that I found (found across racka98 and CLAY-BIOS and MultimediaLucario) . Both allowed me to follow the steps exactly as they were described in the readme, including the one where you drag the ALC3232.plist file and everything. I was able te execute well and never returned me any errors, neither of them.
The also followed Dortania and checked if the command kextstat | grep -E "AppleHDA|AppleALC|Lilu" returned the right firmware. It did.
I also edited the boot-args under NVRAM in the config.plist where I tested all of the id's (layout 12, 15, 18, 28, 32, 55, 59) as found in the supported codes table on github (https://github.com/acidanthera/AppleALC/wiki/Supported-codecs)
None of these things helped, love to hear ideas.
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