helpme Posted August 21, 2015 Share Posted August 21, 2015 Hi all! I recently updated my Yosemite to the latest release but I noticed one things to fix: my audio works if I'm using the laptop's subwoofer, otherwise if I connect devices to the 3,5mm jack, it continues to come off the laptop instead of earphones/headphones. This is was happens if I use power supply without battery connected to the laptop. When I connect my battery to the laptop, headphones start to work, and they continue to work even if I remove the battery, which seems to be nothing but an injector. If I reboot the computer, without battery connected, again: subwoofers work regardless of whether headset are connected or not. When I was under Yosemite 10.10.2 or 10.10.4 the same thing happened, with the difference that just after the first time that I connected the battery, headphones started to work also without battery and also after reboot. Not only, just after update I removed audio kext (from terminal with "sudo su" "rm -r /System/Library/Extensions/KextName.kext") and I rebooted the OS. At login I noticed that audio was working, but soon after Yosemite installation without the kext I use audio was off! So my suspicion is that 10.10.5 update has modified something but honestly I don't know what.. Here I've attached also my audio kext. Thanks in advance to everyone who'll help me! IDT92HD91BXXInject.kext.zip Link to comment Share on other sites More sharing options...
helpme Posted August 22, 2015 Author Share Posted August 22, 2015 Edit: I connected my battery and rebooted machine. Headphones still don't work, so I think that should be a kext related issue. I had a search on my S/L/E folder and I found 5 kext audio (AppleFWAudio.kext, AppleUSBAudio.kext, AudioAUUC.kext, IOAudio2Family.kext, IOAudioFamily.kext), among them I noticed that the one attached on the bottom, on info tab, has been edited last time 18 august 2015, the same day when combo update has been installed. So I think that this kext could be the responsible of my problem.. What do you think? I would add that typing from terminal the command " kextstat | egrep 'Index|Audio' ", I got this result: Index Refs Address Size Wired Name (Version) <Linked Against> 83 4 0xffffff7f81cb5000 0x38000 0x38000 com.apple.iokit.IOAudioFamily (203.3) <82 5 4 3 1> 111 0 0xffffff7f81ced000 0x5000 0x5000 com.apple.driver.AudioAUUC (1.70) <83 33 12 11 7 5 4 3 1> These ones should be the active audio kext, right? AudioAUUC.kext.zip Link to comment Share on other sites More sharing options...
helpme Posted August 23, 2015 Author Share Posted August 23, 2015 Edit2: No DSDT, no SSDT, no battery connected or not, no other reasons. Headphones just work only if connected to the laptop at boot. I don't know why but this is what exactly happens. Do someone knows if there's a patch to make em work even if connected after the boot? Thanks. Link to comment Share on other sites More sharing options...
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