Turn off USB to save power

Hi everybody,

I am planning to connect my Beaglebone to a battery and use a wifi dongle. In order to save power, I want to turn off the wifi. Is that possible? I mean, to put the USB in which the wifi dongle is connected to sleep, and wake it up later?

Thanks in advance,

Ifconfig wlan0 down seemed to cut out most of the wifi power consumption, but I don’t remember if that was with connmand still trying to get it’s grubby little paws all over my network interfaces.

A related question: I understood that the bone runs slower when powered via USB. Is there any way to control this CPU frequency scaling from user space?

Kenneth Finnegan

By default power mangement is turned on. So you need to worry about it. But if you explicitly want to turn it on
wireless-power on