Hi, does anybody know if there is a progress with this bug? I have installed latest available Angstrom distro and running "Linux beaglebone 3.8.13 #1 SMP Tue Jun 18 02:11:09 EDT 2013 armv7l GNU/Linux" and I can see random problem with USB host. One scenario: after reboot I can see 5V at connector and when I insert keybord it's detected (dmesg, lsusb), when I reconnect mouse it works too but when I disconnect I can see there is 0V at USB and lsusb still displays mouse. 0V is there till reboot. I think it's some race condition or so in USB detection code. Scenario may change it's rather random. I don't think it's because of USB overcurrent protection. USB driver is instructed to power off. Seems it's compiled in module in kernel, I can see lsmod related module. Is it possible somehow restart USB support ?
I found it's rather well known problem (many posts) but I've not found reliable solution - I think it's software bug not electrical. Any help appreciated before I sink in kernel code ;-) I believe it's pretty common critical problem to be left unsolved. Thanks Tomas Dne sobota, 16. listopadu 2013 6:18:29 UTC+1 APRichelieu napsal(a): > > Den lördagen den 16:e november 2013 kl. 01:46:23 UTC+1 skrev > [email protected]: > > Hello, > > > > > > First a little bit of a background: > > > > > > I have a beaglebone black connected to the mains with a 5V, 1A DC power > supply. > > I'm running an Xbee USB adapter board (http://goo.gl/ygIboV), and an > XBee 900HP (http://goo.gl/0ZhtM6) on the USB port. > > It's running stock Angstrom Linux. > > > > > > The problem is this: > > > > > > About every 24 hours, the lights on my Xbee adapter board turn off and > the device is nowhere to be seen on my lsusb output. Usually I can still > ssh into the board after this happens. After a reboot, the board is fine > for another 24 hours before the same thing happens again. > > > > > > I have a hunch that the problem is the power supply, but is there > anything else I could try before I go out and buy a new, more powerful > supply? > > > > > > My other question is why would the Xbee work at all if the problem is in > fact a power supply that isn't strong enough? > > > > > > Thanks, > > > > > > Kent Friesen > > There is a bug in the linux USB driver so hotplugging does not work. > I the XBee for som reason disconnects itself, it won't be found. > Try put a hub in between. > > If the problem disappears, then you ran into this, and not an adapter > problem. > > Ulf -- 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/groups/opt_out.
