Hi, I have a unpowered 2-port USB hub that I have connected to the BeagleBone Black (Rev C). I have two (serial over ) USB devices connected to the two port of the USB hub. They are are not powered to begin with. When i power up the Beagle Bone, i see the USB hub listed in the output for 'lsusb'. Now i power up the two USB device hanging off the USB hub. But i do not see the USB devices listed in the output of 'lsusb'. Also, there is no /dev/ttyUSB* file. For my project, it wold be ideal for the beagle bone to be powered up before these USB devices. Any idea on what i have messed up or missed?
I have verified that if i connect the USB device directly into the USB port on the beagle bone black, then I can power the USB device after the beagle bone is powered up and it shows up in the output of 'lsusb' and i can control the device. Here are some more specifics about my setup. 1. I am using the beagle bone black Rev C board. 2. I am running Debian linux (jessie v 8.3) on the beagle bone black . The version of the linux kernel is v3.8.15 -bone 71. 3. I am powering the beagle bone with the power supply ( instead of over the USB connector for etherent over USB). Thanks, Karina -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
