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After Upgrade to Yosemite 10.10.5 no correct USB Sound

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After Upgrade to Yosemite 10.10.5 no correct USB Sound


After I have upgraded to 10.10.5, the sound from the USB sound card does not work properly anymore.

The Kext AppleUSBAudio can not find the Kext IOAudioFamily at startup, although it is present and is loaded at startup.

Under 10.10.1 everything worked without problem. MacOS should support compatible USB sound card plug and play. In some Kext is probably a mistake.

I hope you all can help me.

Best regards,


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