se io do da terminale il comando:lsusb
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navarco@navarco-VirtualBox:~$ lsusb
]Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 03f0:5d11 Hewlett-Packard PhotoSmart C5200 series
Bus 001 Device 003: ID 04a9:190d Canon, Inc.
Bus 001 Device 002: ID 80ee:0021 VirtualBox USB Tablet
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
navarco@navarco-VirtualBox:~$ non sto facendo altro che seguire una guida trovata in rete per questo scanner installato su Ubuntu, la guida nel secondo passaggio mi dice di dare il comando:
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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 0x1d6b/0x0003 at 002:001: Access denied (insufficient permissions)
could not open USB device 0x04a9/0x190d at 001:003: Access denied (insufficient permissions)
could not open USB device 0x80ee/0x0021 at 001:002: 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.Nella guida dovrei ottenere questo:
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found USB scanner (vendor=0x04a9 [Canon], product=0x190d [CanoScan]) at libusb:001:005