以下syslog抜粋です。 usb.c: USB new device connect, assigned device number 2 usb_control/bulk_msg: timeout usb.c: USB device not acceptingnew address (error=-110) usb.c: USB new device connect, assigned device number -1 usb_control/bulk_msg: timeout usb.c: USB device not acceptingnew address (error=-110) usb.c: USB disconnect on device -1