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Yosemite on E5450


e5450

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I move the 4 kext into /L/E and got error message. Then I removed them and use kext wizard to install them into /S/L/E. Rebuild cache and here is the output, same as yours:

rebuilding //System/Library/PrelinkedKernels/prelinkedkernel

kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext EAPDFix.kext

kext file:///System/Library/Extensions/DisableTurboBoostBattery.kext/ is in hash exception list, allowing to load

kext-dev-mode allowing invalid signature -67030 0xFFFFFFFFFFFEFA2A for kext AppleHDA_ALC293.kext

kext-dev-mode allowing invalid signature -67062 0xFFFFFFFFFFFEFA0A for kext ACPIPoller.kext

kextcache updated critical boot files, requesting launchd reboot

Reboot and speaker is working now. However, only speaker is available and no other devices such as HDMI audio, lineout....

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everything looks fine with the reg. I even tested the config and DSDT/SSDT on my system with similar specs and HDMI Audio works just fine.

Did you confirm your HDMI cable is working fine?

Perhaps you might want to try different ig-platform-id

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