as4m4df Posted September 8, 2014 Share Posted September 8, 2014 Hi Guys, Trying to get sound on ALC277 (this is what it says on the chip physically). Codec Dump shows ALC270 (Weird?) So used patched AppleHDA for ALC270 and Patched DSDT. (I've attached DSDT and Codec Dump). No sound =( What am i missing? Any help much appreciated. DSDT and Codec Dump.zip Link to comment Share on other sites More sharing options...
falanx Posted September 8, 2014 Share Posted September 8, 2014 Hello. What method did you use to patch your AppleHDA? Link to comment Share on other sites More sharing options...
as4m4df Posted September 8, 2014 Author Share Posted September 8, 2014 Fixed!! Patched dsdt correctly with layout-id 12 (changed to layout id 3) and IRQ laptop patch (RehabMan patches) For sound after sleep added CodecCommander.kext v2.2 also patched _WAK (RehabMan) in dsdt. Link to comment Share on other sites More sharing options...
Mirone Posted September 9, 2014 Share Posted September 9, 2014 Hi Guys, Trying to get sound on ALC277 (this is what it says on the chip physically). Codec Dump shows ALC270 (Weird?) So used patched AppleHDA for ALC270 and Patched DSDT. (I've attached DSDT and Codec Dump). No sound =( What am i missing? Any help much appreciated. try this:ALC270.zip Link to comment Share on other sites More sharing options...
as4m4df Posted September 11, 2014 Author Share Posted September 11, 2014 try this:ALC270.zip Thanks Mirone. I already used v1 of your patched AppleHDA for ALC270 which works fine. I hadn't patched the DSDT properly, that's why it wasn't initially working. Note to anyone else with this chipset (ALC277). Codec Dump shows EAPD on the speaker node 0x14 so you'll need someway of 'waking' sound up after sleep, i'm personally using CodecCommander. Link to comment Share on other sites More sharing options...
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