Angstrom and BB - All USB devices stop working

GoogleGroups
1

Hello,

I have Angstrom 2.6.32 loaded according to the directions from
"HowToGetAngstromRunning" at <http://code.google.com/p/beagleboard/
wiki/HowToGetAngstromRunning>. Everything works fine and the interface
loads. However, all USB devices randomly stop working after an
arbitrary period of time. The mouse stops moving, keyboard stops
working, and the BB doesn't recognize the eth0 connection, etc. I'm
not sure what the problem is or how to diagnose it. I am guessing that
it is a power related issue.

Here are few lines that come on the console after USB stop working:

[ 1321.433197] hub 1-0:1.0: port 2 disabled by hub (EMI?), re
-enabling...
[ 1321.441680] usb 1-2: clear tt 1 (9051) error -71
[ 1321.446929] usb 1-2: USB disconnect, address 2
[ 1321.451507] usb 1-2: clear tt 1 (9051) error -71
[ 1321.456604] usb 1-2: clear tt 1 (9051) error -19
[ 1321.461486] usb 1-2.1: USB disconnect, address 3

If anyone can shed some light on my problem, please write detailed
steps for a complete BB beginner. Thanks so much!!!!

-V

2

Update: After fiddling around with my USB devices I have found that
once I remove my USB network connection (eth0) the problem goes away.
I'm not sure what this means, but I don't have a way to connect to
internet without that connection. I hope this information helps
someone diagnose the problem.

-V

3

as this depends a lot on your beagleboar connected as in my case I have it connected by eliminator with a 8-port USB hub connecting network and peripheral …

2010/6/22 V <mister.mulay@gmail.com>

4

So, do you use external powerful source or not? USB-ethernet can sink a lot of current (~300mA)

2010/6/23 JOSUE MEDINA <mnjosue@gmail.com>

5

If your BeagleBoard is a RevC3 it’s known hardware issue.
http://elinux.org/BeagleBoard#EHCI

2010/6/22 V <mister.mulay@gmail.com>

6

And, if you read the System Reference Manual, you will find a possible fix for it.

Gerald

7

Thanks Michael and Gerald,

It seems after the fix, USB is working. Although other problems have
popped up, but for now I don't think they are USB related.

-V

8

Glad you are making progress!!

Gerald