[sane-devel] Scanner Plustek Opticslim 2600

[Kris Van Bruwaene]

I had a Medion flatbed scanner MD/LT 9385 working on my Manjaro Linux (currently kernel 3.9.7-1, x86_64), by just uncommenting the necessary lines in /etc/sane.d/gt68xx.conf and putting the firmware gt680xfw.usb in /usr/share/sane/gt68xx/
Last week the scanner failed, so I bought a brand new Plustek Opticslim 2600, also gt68xx based (GT6816 chip). I hoped that the same procedure would work again. I added the following lines to /etc/sane.d/gt68xx.conf:
# Autodetect Plustek OpticSlim 2600
usb 0x07b3 0x0467
model "OpticSlim 2600"
override "plustek-opticslim-2400"
firmware "/usr/share/sane/gt68xx/cis3R5B1.fw"
afe 0x20 0x02 0x22 0x03 0x1f 0x04


and put the required firmware in place. 

Things don't work however:

 lsusb
Bus 001 Device 002: ID 072f:9000 Advanced Card Systems, Ltd ACR38 AC1038-based Smart Card Reader
Bus 002 Device 002: ID 07b3:0467 Plustek, Inc. 
Bus 003 Device 002: ID 0424:2502 Standard Microsystems Corp. 
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 004: ID 03f0:7b04 Hewlett-Packard 


 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.
  # Also you need support for SCSI Generic (sg) in your operating system.
  # If using Linux, try "modprobe sg".

could not open USB device 0x072f/0x9000 at 001:002: Access denied (insufficient permissions)
could not open USB device 0x0424/0x2502 at 003:002: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0001 at 001:001: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0001 at 002:001: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0002 at 003:001: Access denied (insufficient permissions)
could not open USB device 0x1d6b/0x0002 at 004:001: 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.



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.
  # Also you need support for SCSI Generic (sg) in your operating system.
  # If using Linux, try "modprobe sg".

could not fetch string descriptor: Pipe error
could not fetch string descriptor: Pipe error
  # 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.


scanimage -L
device `gt68xx:libusb:002:002' is a Plustek OpticSlim 2400 flatbed scanner


Notice how scanimage wrongly identifies it as OpticSlim 2400, despite the modified gt68xx.conf

Any help is appreciated.
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