As soon as I installed the latest version of the Wheezy I have found that there is some problem with an USB. When I start my Orange PI I can see that USB devices are power supplied from the bus only first a few seconds (when the bootloader is active I guess) and then being switched off. When I plug an USB device and supply it externally then it seems to be working well.
My question is: how to switch on power supply of the USB port on my Orange PI?
I have read a number of linux forums and found nothing.
Very promising seems a command
echo on > /sys/bus/usb/devices/usb1/power/level
or similar but unfortunately it has no effect.
Any hint, guys?
Thanks a lot.
Radek