On Thu, 19 Jun 2014, Jörg Otte wrote: > I don't know how to do this. To enable dynamic debugging (as root): echo 'module usbcore =p' >/sys/kernel/debug/dynamic_debug/control echo 'module ehci_hcd =p' >/sys/kernel/debug/dynamic_debug/control Do this before you carry out the suspend, and post the resulting dmesg log. 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