On Sat, 28 Jul 2012, shaiju shaiju wrote: > Hi Alan, > > I am not worried about the stack trace . I am worried is the > USB is getting disconnected automatically. > Then it debounce back to Highspeed . The log you posted didn't say anything about a USB device getting disconnected automatically. The disconnect event looked like it was caused by you unplugging a USB cable. Also, how is this related to "RE: usb hub is n't recognised during boot up(sometimes)"? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html