Comment 36 for bug 205496

hello to all,

this is not about root to operate scanner, is about scanner port detection, just thought that it would be ok to post it here.

I'm running hardy amd64 with last upgrades/updates installed

uname -r
2.6.24-18-generic

. the scanner used to work ok with previous version 14, 16. didn't use it for a while; now I'm getting

error failed to open device 'snapscan:libusb:002:010':invalid argument

and this

lsusb

Bus 002 Device 010: ID 06bd:208f AGFA-Gevaert NV SnapScan e50
Bus 002 Device 007: ID 0d8d:0105 Promotion & Display Technology, Ltd
Bus 002 Device 004: ID 0ace:1215 ZyDAS WLA-54L WiFi
Bus 002 Device 003: ID 050d:0224 Belkin Components F5U224 USB 2.0 4-Port Hub
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 010: ID 050d:0980 Belkin Components
Bus 001 Device 009: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 001 Device 008: ID 0451:1446 Texas Instruments, Inc. TUSB2040/2070 Hub
Bus 001 Device 001: ID 0000:0000

and this

scanimage -L
device `snapscan:libusb:002:010' is a AGFA SNAPSCAN flatbed scanner

and this

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=0x06bd [AGFA ], product=0x208f [SNAPSCAN]) at libusb:002:009
found USB scanner (vendor=0x0ace, product=0x1215) at libusb:002:004
found USB scanner (vendor=0x067b, product=0x2303) at libusb:001:009

pls notice the diff --> 009 on last command output vs before last command 010 and the error message.

is there any fix to this or at least why it happens.

any help is appreciated.

best regards,
peter b