$ lusb | grep Canon
Bus 002 Device 010: ID 04a9:2216 Canon, Inc. CanoScan 3200F
$ sane-find-scanner
found USB scanner (vendor=0x04a9, product=0x2216, chip=GL841?) at libusb:002:010
found USB scanner (vendor=0x147e, product=0x2016) 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.
$ scanimage --list-devices
No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).
$ lsb_release -d
Description: Ubuntu 12.04.2 LTS
$ lusb | grep Canon
Bus 002 Device 010: ID 04a9:2216 Canon, Inc. CanoScan 3200F
$ sane-find-scanner
found USB scanner (vendor=0x04a9, product=0x2216, chip=GL841?) at libusb:002:010
found USB scanner (vendor=0x147e, product=0x2016) 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.
$ scanimage --list-devices
No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).