toto1234 Posted April 17, 2015 Share Posted April 17, 2015 Hi, I'd like to report here the steps I took to achieve success, which took a good half-day so I hope to save other people the time. I'd also like to thank toleda for his incredible work! 1. As explained in toledo's guide on github, download and run MaciASL, add the source https://raw.github.com/toleda/audio_ALCinjection/master in preferences 2. select new from ACPI -> DSDT, then apply Tools/Patch, first AMI-Clean Compile->Apply, then Enable Audio ID: 1->Apply, Close 3. save the resulting file in ACPI machine language binary (not Disassembled ASL), name it dsdt, copy in a terminal the file into /Extra, so as a result /Extra/dsdt.aml must be present and contain the patched DSDT 4. reboot and run DPCIManager. if the DSDT is ok, you will now have Codec ID = 0x10EC0887 (was blank before) 5. backup and remove /System/Library/Extensions/AppleHDA.kext 6. install AppleHDA.kext from http://www.insanelymac.com/forum/files/file/123-realtek-alc887-applehda-audio/ - do not use the automated script audio_realtekALC-100_v1.0.4b.command which did not work for me 7. rebuild the kext cache (eg. using myFix) and reboot, then you'll have sound Link to comment Share on other sites More sharing options...
toto1234 Posted April 25, 2015 Author Share Posted April 25, 2015 Some bad news, I was too quick to declare success: audio is terribly choppy, very bad stuttering. If anyone has any clue about how to fix it, please, I'm begging you. Link to comment Share on other sites More sharing options...
toto1234 Posted June 14, 2015 Author Share Posted June 14, 2015 This problem was fixed, I had to update the bootloader, select ALC887 (current), HDAEnabler=yes, I also provided the original DSDT.aml and it worked fine, no stuttering! Many thanks to the people who worked on the Realtek audio drivers. 1 Link to comment Share on other sites More sharing options...
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