[sane-devel] Plustek M12 passes "scanimage -T" but doesn't work

[Perry Hutchison]

I recently picked up a NeatReceipts Scanalyzer, which SANE recognizes
as a Plustek OpticSlim M12, at a thrift store.  I have gotten as far as:

  # scanimage -L
  device `gt68xx:libusb:/dev/usb0:/dev/ugen0' is a Plustek OpticSlim M12 flatbed scanner

  # scanimage --help -d gt68xx:libusb:/dev/usb0:/dev/ugen0 | less
  Usage: scanimage [OPTION]...

  Start image acquisition on a scanner device and write PNM image data to
  standard output.

  -d, --device-name=DEVICE   use a given scanner device (e.g. hp:/dev/scanner)
      --format=pnm|tiff      file format of output file
  <snip>
  Options specific to device `gt68xx:libusb:/dev/usb0:/dev/ugen0':
    Scan Mode:
      --mode Color|Gray|Lineart [Gray]
          Selects the scan mode (e.g., lineart, monochrome, or color).
  <snip>

  # scanimage -T -p -v -d gt68xx:libusb:/dev/usb0:/dev/ugen0
  scanimage: scanning image of size 2575x3531 pixels at 8 bits/pixel
  scanimage: acquiring gray frame, 8 bits/sample
  scanimage: reading one scanline, 2575 bytes...  PASS
  scanimage: reading one byte...          PASS
  scanimage: stepped read, 2 bytes...     PASS
  scanimage: stepped read, 4 bytes...     PASS
  scanimage: stepped read, 8 bytes...     PASS
  scanimage: stepped read, 16 bytes...    PASS
  scanimage: stepped read, 32 bytes...    PASS
  scanimage: stepped read, 64 bytes...    PASS
  scanimage: stepped read, 128 bytes...   PASS
  scanimage: stepped read, 256 bytes...   PASS
  scanimage: stepped read, 512 bytes...   PASS
  scanimage: stepped read, 1024 bytes...  PASS
  scanimage: stepped read, 2048 bytes...  PASS
  scanimage: stepped read, 4096 bytes...  PASS
  scanimage: stepped read, 4095 bytes...  PASS
  scanimage: stepped read, 2047 bytes...  PASS
  scanimage: stepped read, 1023 bytes...  PASS
  scanimage: stepped read, 511 bytes...   PASS
  scanimage: stepped read, 255 bytes...   PASS
  scanimage: stepped read, 127 bytes...   PASS
  scanimage: stepped read, 63 bytes...    PASS
  scanimage: stepped read, 31 bytes...    PASS
  scanimage: stepped read, 15 bytes...    PASS
  scanimage: stepped read, 7 bytes...     PASS
  scanimage: stepped read, 3 bytes...     PASS

but when I try to actually scan something:

  # scanimage -p -v -d gt68xx:libusb:/dev/usb0:/dev/ugen0 > scantest.pnm
  scanimage: scanning image of size 2575x3531 pixels at 8 bits/pixel
  scanimage: acquiring gray frame
  Progress: 0.4%
  Progress: 0.7%
  Progress: 1.1%
  <snip>
  Progress: 99.8%
  Progress: 100.0%
  Progress: 100.0%
  scanimage: min/max graylevel value = 123/132
  scanimage: read 9092325 bytes in total

the scanner's motor does not run and I get a solid gray "image"
file.  (The LED between the scanner's two buttons is on when the
scanner is connected to the USB port, and it blinks while the
all-gray image is being acquired.)

I am using

  # scanimage -V
  scanimage (sane-backends) 1.0.17; backend version 1.0.17

on FreeBSD.

I think the firmware file is in the proper location, since installing
it (as /usr/local/share/sane/gt68xx/cism216.fw) cleared up a

  [gt68xx] Couldn't open firmware file (`/usr/local/share/sane/gt68xx/cism216.fw'): No such file or directory

message from "scanimage --help".

Am I doing something wrong, or do I have a dead scanner?