Ubuntu 20.04 control USB when powered off
I have a LiPo battery plugged into the battery port underneath my Alpha. to conserve on battery life when not powered on I would like to turn off the USB bus completely
this is normally done within linux with this command:
sudo sh -c "echo 'suspend' > /sys/bus/usb/devices/usb2/power/control"
this would go into a shutdown script but the command itself is not functioning
and then on boot run this
sudo sh -c "echo 'on' > /sys/bus/usb/devices/usb2/power/control"
unfortunately this is not working at all. Can anyone provide me with some insight on how I can get this done?
this is normally done within linux with this command:
sudo sh -c "echo 'suspend' > /sys/bus/usb/devices/usb2/power/control"
this would go into a shutdown script but the command itself is not functioning
and then on boot run this
sudo sh -c "echo 'on' > /sys/bus/usb/devices/usb2/power/control"
unfortunately this is not working at all. Can anyone provide me with some insight on how I can get this done?