Простое Сканирование: никакие доступные сканеры, Ubuntu 15.04

У меня есть два компьютера Ubuntu в той же сети. Старый использует Ubuntu 14.04. Простое сканирование работает отлично с моей Samsung SCX-3205w. Новый использует Ubuntu 15.04. На нем простое сканирование не может найти тот же сканер: "Никакие доступные сканеры. Подключите сканер". Я попытался запустить простой сканер как корень без успеха. Работы функции печати.

У Вас есть совет?Спасибо.

Править:

Соединение через Wi-Fi.

После запроса A.B. вот вывод sudo sane-find-scanner:

  # sane-find-scanner will now attempt to detect your scanner. If the
  # result is different from what you expected, first make sure your
  # scanner is powered up and properly connected to your computer.

  # No SCSI scanners found. If you expected something different, make sure that
  # you have loaded a kernel SCSI driver for your SCSI adapter.

found USB scanner (vendor=0x0a5c [Broadcom Corp], product=0x216f [BCM20702A0]) at libusb:001:003
  # Your USB scanner was (probably) detected. It may or may not be supported by
  # SANE. Try scanimage -L and read the backend's manpage.

  # Not checking for parallel port scanners.

  # Most Scanners connected to the parallel port or other proprietary ports
  # can't be detected by this program.

и sane-find-scanner:

  # sane-find-scanner will now attempt to detect your scanner. If the
  # result is different from what you expected, first make sure your
  # scanner is powered up and properly connected to your computer.

  # No SCSI scanners found. If you expected something different, make sure that
  # you have loaded a kernel SCSI driver for your SCSI adapter.

could not open USB device 0x8087/0x8000 at 004:002: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0002 at 004:001: Access denied (insufficient permissions)
could not open USB device 0x8087/0x8008 at 003:002: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0002 at 003:001: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0003 at 002:001: Access denied (insufficient permissions)
could not open USB device 0x0a5c/0x216f at 001:003: Access denied (insufficient permissions)
could not open USB device 0x06cb/0x2ac3 at 001:002: Access denied (insufficient permissions)
could not open USB device 0x0bda/0x573c at 001:004: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0002 at 001:001: Access denied (insufficient permissions)
  # No USB scanners found. If you expected something different, make sure that
  # you have loaded a kernel driver for your USB host controller and have setup
  # the USB system correctly. See man sane-usb for details.

  # Not checking for parallel port scanners.

  # Most Scanners connected to the parallel port or other proprietary ports
  # can't be detected by this program.

  # You may want to run this program as root to find all devices. Once you
  # found the scanner devices, be sure to adjust access permissions as
  # necessary.

спасибо