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jadonk / beagleboard

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USB Hub not working with BeagleBone Black #119

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. plugged in usb hub
2.
3.

What is the expected output? What do you see instead?

I want to have more than 1 usb port. Bought this hub:
http://www.microcenter.com/product/360454/7-Port_USB_20_Hub_with_Power_Adapter

What version of the product are you using? On what operating system?
Beaglebone Black A5B. Just upgraded to latest Angstrom

Please provide any additional information below.

I cannot get any hub I own to work with my Beaglebone Black. I have tried two 
powered and one not powered. I plug it in then boot the beaglebone. After that 
nothing works that is plugged into the hub. If I unplug the hub and plug a 
mouse directly in then the mouse works. Any suggestions? Do I need a driver?

Original issue reported on code.google.com by rwatson...@gmail.com on 16 Jun 2013 at 9:33

GoogleCodeExporter commented 9 years ago 
[deleted comment]
GoogleCodeExporter commented 9 years ago 
Cut the red wire between the powered Hub and BBB. The powered Hub MUST NOT feed 
the BBB.

Original comment by fbecker...@gmail.com on 22 Jul 2013 at 6:40

GoogleCodeExporter commented 9 years ago 
Cutting the red wire resolved the problem for me. Thanks man!

Original comment by sonerdem...@gmail.com on 16 Aug 2013 at 4:24

GoogleCodeExporter commented 9 years ago 
Cutting the red wire made my Belkin Flex Hub unuseable. I added a SMD diode 
between the red wire and the board.

Original comment by florian....@googlemail.com on 21 Aug 2013 at 4:35

GoogleCodeExporter commented 9 years ago 
I cut the wire on my cheap AC powered USB hub and it did the trick. Is your 
Belkin Flex Hub an AC powered hub or not? If it is not AC powered that is why 
it is not working, no power is getting to it.

Original comment by rwatson...@gmail.com on 21 Aug 2013 at 4:38

GoogleCodeExporter commented 9 years ago 
The external 5V power supply to the USB hub is optional. Without the diode it 
didn't work at all. Adding the diode makes it useable for the BBB with and 
without external power supply connected. And it still works on a regular pc.

Original comment by florian....@googlemail.com on 21 Aug 2013 at 6:39

GoogleCodeExporter commented 9 years ago 
@florian
Can you explain what the diode is for, and which way round you connected it?

Original comment by richard....@gmail.com on 9 Oct 2013 at 12:26

GoogleCodeExporter commented 9 years ago 
Cutting the red wire worked for me too. Thanks!

Original comment by mam...@gmail.com on 15 Sep 2014 at 8:05

GoogleCodeExporter commented 9 years ago 
This is a pretty weird quirk, I have to damage my functional USB hub to make it 
with the BBB

Original comment by MichaelE...@gmail.com on 28 Jan 2015 at 10:08