Attaching an external audio device doesn't make it available for usage

Originator:Zettt1981
Number:rdar://14704422 Date Originated:10-Aug-2013 12:22 PM
Status:Open Resolved:
Product:OS X Product Version:10.9/13A538g
Classification:Serious Bug Reproducible:Sometimes
 
Summary:
When an external audio device is attached, such as a USB microphone, Thunderbolt device (https://devforums.apple.com/message/864199), or audio interface, the system will power it, but not recognize it/make it available for usage.

Steps to Reproduce:
* Open System Preferences → Audio → Input
* Attach external audio device
* The list won't change.

Expected Results:
* The audio device should show up.

Actual Results:
* The audio device most of the times doesn't show up. Non-reproducible. No messages logged to Console.

Regression:
* Previous versions of OS X recognized my devices correctly.

Notes:
* Products tested: Samson C03U, M-Audio Fast Track, late 2010 17" MBP, 2007 17" MBP, multiple cables, all USB ports.

Comments


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