HT203161: Isolating issues in Mac OS X
Learn about Isolating issues in Mac OS X
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All replies
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Helpful answers
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Mar 11, 2015 7:55 PM in response to CS36Tby Pancenter,Is that unit bus powered or does it have it's own power supply?
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Jun 17, 2015 12:10 PM in response to CS36Tby Felix1988,I just got the problem that after upgrading to Yosemite my M-Audio BlackBox interface worked not anymore. So I looked around and saw that Apple introduced a new mechanism called "kext signing" in Yosemite, which prevents the system from executing not authorized kexts and due the fact that the driver (kext) of my audio interface is a little bit older, it isn't signed at all. So for me worked disabling the mechanism by executing the following command on the terminal:
sudo nvram boot-args=kext-dev-mode=1
The command for reenabling it again is:
sudo nvram -d boot-args
But by disabling it, you should be careful to only install drivers from sources that you trust!
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Jun 17, 2015 1:16 PM in response to Felix1988by BenB,Or just install the new Yosemite drivers for that I/O unit. That said, the Black Box is a discontinued model, and M-Audio isn't updating drivers anymore. So when that driver dies, it dies.