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I am using an external usb audio device which I usually keep plugged into my machine. I am finding that this device is sometimes not being detected when I boot the computer.
When this happens, issuing the following command:
$ aplay -Ldoes not list this particular device. Plugging and unplugging the device does not seem to help.
What does seem to resolve the problem is unloading and then reloading the snd_sub_audio kernel module. This is done by issuing the following commands:
# rmmod snd_usb_audio
# modprobe snd_usb_audioCould anyone give some insight as to why the usb audio device isn't being detected and why this only happen occasionally? Could this be a udev issue? The device in question is an M-Audio Fast Track Pro.
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