hi i got a usb scanner 'mustek 1200 UB plus'. the scanner was working perfectly until i did an upgrade to kde. now the scanner it is not recognised properly from my system. i am running debian's woody with kernel 2.6.5.
aristos@debian:~$ scanimage -L
device `gt68xx:libusb:002:002' is a Mustek BearPaw 1200 CU flatbed scanner
aristos@debian:~$
, but when i am trying to create an image with scanimage, or launching xsane, errors appear that they can not find the device. any ideas?

What errors are you getting?

when i launch xsane, it searches for devices, and then it gives me an error which says:
Failed to open device 'gt68xx:libusb:002:002' Invalid argument
also when i use the scanner in console as user (same happens as root:
aristos@debian:~$ scanimage > test.pnm
[gt68xx] Couldn't open firmware file (neither `/usr/share/sane/gt68xx/PS1fw.usb' nor `/usr/share/sane/gt68xx/ps1fw.usb'): No such file or directory
scanimage: open of device gt68xx:libusb:002:002 failed: Invalid argument
aristos@debian:~$


any ideas?

i forgot to say that the correct firmware is 'sbfw.usb'

As root do "sane-find-scanner" and post the output.

debian:~# sane-find-scanner

# No SCSI scanners found. If you expected something different, make sure that
# you have loaded a SCSI driver for your SCSI adapter.
# Also you need support for SCSI Generic (sg) in your operating system.
# If using Linux, try "modprobe sg".

found USB scanner (vendor=0x05d8, product=0x4002, chip=GT-6801) at libusb:002:002
# 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.
debian:~#

Did you try 'scanimage -L'?

here is the scanimage as user. the same apply for root. it is not working.

aristos@debian:~$ scanimage -L
device `gt68xx:libusb:002:002' is a Mustek BearPaw 1200 CU flatbed scanner
aristos@debian:~$

Well it seems to find the scanner ok, the problem must be with the firmware file.

thnks for the reply. ok now how do i overcome the problem? i am kinda new

Make a copy of 'sbfw.usb' called 'PS1fw.usb' in "/usr/share/sane/gt68xx/"

in that folder the only file that exists is sbfw.usb. there is nothing called PS1fw.usb!

Yes, but the scanner is looking for PS1fw.usb, so do "cp sbfw.usb PS1fw.usb" and lets see if we can fool it with a name change.

can you tell me the whole command including paths? kinda new.

Ok, as root do the following,
After that you should have two firmware files both the same except for their names, then try your scanner again and we'll see if the name of the firmware file was causing the error.

[Edit: Remember that linux is case sensitive when you do the cp command.]