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[Jose Gómez <1532292@xxxxxxxxxxxxxxxxxx>]

Tested with a USB hub; doesn't make any difference.

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https://bugs.launchpad.net/bugs/1532292

Title:
  Mechanical part stops moving after each operation

Status in sane-backends package in Ubuntu:
  New

Bug description:
  The scanner only does the first operation after I plug it in. E.g.
  preview a page, or scan it. On the second operation, the mechanical
  part does not move anymore (there is no noise whatsoever from the
  scanner), and the scan output is pitch black.

  The workaround I have found is to run scanimage -L between each
  operation. I.e.:

  - Start Xsane
  - Preview
  - run scanimage -L
  - Scan
  - run scanimage -L
  - Preview
  - run scanimage -L
  - Scan
  ...

  I am using SANE git from Rolf's PPA, since I was before affected by
  bug https://bugs.launchpad.net/ubuntu/+source/sane-
  backends/+bug/1250196 since I got a new computer.

  Output of 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=0x04a9 [Canon], product=0x220e [CanoScan], chip=LM9832/3) at libusb:001:011
    # 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.

  Output of scanimage -L:

  device `v4l:/dev/video0' is a Noname Integrated_Webcam_HD virtual device
  device `plustek:libusb:001:011' is a Canon CanoScan N1240U/LiDE30 flatbed scanner
  device `hpaio:/net/Officejet_6800?ip=192.168.1.251' is a Hewlett-Packard Officejet_6800 all-in-one

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