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[Solved] Dell 5548 - battery and audio issues


arhu

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When I copy AppleHDA_ALC255.kext to /System/Library/Extensions I have error like this The system extension “/System/Library/Extensions/AppleHDA_ALC255.kext†was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update."

 

Should I use easykext utility?

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I have working DSDT, speedstep, battery and almost everything but battery lasts for not longer that 2h.

When I was using windows 10 my battery lasts for about 4-5h (ati radeon was turned off).

How to extend battery life?

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