The USB interface on the beaglebones can be very picky what it'll accept. So simply picking a different USB hub may, or may not solve your problem.
On Mon, Mar 21, 2016 at 10:00 PM, Karina <[email protected]> wrote: > Actually, the version of the linux kernel i am running on my beagle bone > is v3.8.13 - bone 70. > > -Karina > > > On Monday, March 21, 2016 at 9:49:32 PM UTC-7, Karina wrote: >> >> 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. > -- 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.
