Hardware :: USB Device Voltage Cut Off?

Aug 3, 2010

I'm using RHEL5 and checking USB devices. Now what I'm trying is to cut off (turn off) the voltage supplied to USB device.

Quote:

# uname -r
2.6.29.6.99.custom.22122009
# cd /sys/bus/usb/devices/2-1/power
# ls
active_duration autosuspend connected_duration level wakeup
# echo "suspend" > level

But, it's not possible to turn off the power of USB devices, although e.g. only iPod was released from the USB device by this commands.

Is there a ways to directly turn off the voltage of USB dev on linux?

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Code:

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[code]...

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[code]...

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[code]...

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[Code]....

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[code]....

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