Long Cat Posted March 2, 2014 Share Posted March 2, 2014 A strange issue started occurring with my hack shortly after the 10.9.2 update. Currently, I'm using a patched DSDT and AppleHDA (thanks to toleda's guides) to enable onboard and HDMI audio with my GA-x79-UP4 system. And they work just fine. I don't believe there's any problem there. However, shortly after resume from sleep, audio is lost across the entire system about 2 out of every 3 times. Onboard, HDMI and USB are all gone. Using the terminal to kextunload and then kextload AppleHDA restores audio... but that's going to get old pretty fast. I think I'm experiencing the same issue that's been affecting some real macs with mavericks. The symptoms, cause and 'cure' are the same by the sounds of it. https://discussions.apple.com/thread/5482053?tstart=0 Rolling back to earlier versions of AppleHDA don't seem to do the trick, nor does using other ways to enable HDA i.e. kext instead of DSDT. So I'm almost certain the problem isn't related to anything hackintosh. So what I'm trying to work out is: what about the 10.9.2 update triggered the bug? It was fine on 10.9.1. Anyone else out there experiencing this or have any input? Cheers. Link to comment Share on other sites More sharing options...
Long Cat Posted March 2, 2014 Author Share Posted March 2, 2014 Okay, may have just fixed that one myself. Rolling all the way back to patched 10.8.5 AppleHDA seems to fix the issue. Even though later versions were previously working with 10.9-10.9.1. Weird. Guess we'll just use this for now and see what happens in future... Link to comment Share on other sites More sharing options...
calciumantacid Posted March 2, 2014 Share Posted March 2, 2014 I have the same problem after updating to 10.9.2. Also using toleda's patch, if it makes any difference. Link to comment Share on other sites More sharing options...
yangshun1029 Posted March 3, 2014 Share Posted March 3, 2014 Thanks, it works,patched 10.8.5 AppleHDA is ok! Link to comment Share on other sites More sharing options...
FelipeZé Posted March 3, 2014 Share Posted March 3, 2014 https://github.com/Dolnor/EAPD-Codec-Commander this worked for me using 10.9.2 AppleHDA Link to comment Share on other sites More sharing options...
TimeWalker75a Posted March 4, 2014 Share Posted March 4, 2014 To fix the issue of audio loss on real macs apple has rewritten some parts of apple hda which are responsible for adio stream handling after power state changes. There's now a procedure called runPowerManagementTimerForEngine and there are two supplemental procedures related with it - StopEngineAtPositionInput and StopEngineAtPositionOutput. the later two were just a single short procedure, which is now split into two enormous routines ... https://github.com/Dolnor/EAPD-Codec-Commander this worked for me using 10.9.2 AppleHDA This should work only for codecs using EAPD - mobile codecs mostly, generation the *pop* will allows the codec to work only for some short time interval (about 35 second), then it will die again. 1 Link to comment Share on other sites More sharing options...
jakes Posted March 6, 2014 Share Posted March 6, 2014 I got the same problem but I don't want to use old version kexts. My codec has EAPD, I need a patched IOAudioFamily.kext .... Link to comment Share on other sites More sharing options...
TimeWalker75a Posted March 6, 2014 Share Posted March 6, 2014 You need to read a post above your post. 1 Link to comment Share on other sites More sharing options...
Long Cat Posted March 6, 2014 Author Share Posted March 6, 2014 As a temporary fix, I don't see the problem with using the older kext - unless there's some pre-existing issue on your setup meaning you can't. Even some people with affected real macs have had to do this. Functionally everything works as far as I can tell, and I can't find any evidence i.e. log messages relating to problems with sound using AppleHDA 2.4.7 from 10.8.5 on Mavs. I'm just gonna let Apple deal with this one. Until then, the old kext works fine. Link to comment Share on other sites More sharing options...
frankiee Posted June 5, 2014 Share Posted June 5, 2014 Any news on this? Seems I have the same problem .... Link to comment Share on other sites More sharing options...
bundziur Posted July 12, 2014 Share Posted July 12, 2014 It's been over a month since the last reply in this thread, has anyone managed to fix it in a "cleaner" way than reverting to old kexts? Link to comment Share on other sites More sharing options...
slayer2333 Posted July 13, 2014 Share Posted July 13, 2014 You may consider the EAPD kext to fix this, working pretty well for me: http://forum.osxlatitude.com/index.php?/topic/3084-eapdjack-sense-fix-no-audiojack-sense-issue-after-sleep/ Link to comment Share on other sites More sharing options...
frankiee Posted July 13, 2014 Share Posted July 13, 2014 You may consider the EAPD kext to fix this, working pretty well for me: http://forum.osxlatitude.com/index.php?/topic/3084-eapdjack-sense-fix-no-audiojack-sense-issue-after-sleep/ Unfortunately, EAPD fix does not help either, assuming I did the config correctly. Am using ALC 898. Link to comment Share on other sites More sharing options...
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