CanoScan LiDE100 found by lsusb and sane-find-scanner, not by scanimage -L

[Y P-2]

Hi,

I'm currently helping a new(bie) Linux (Ubuntu) user to migrate from Win to
Linux.
All works fine except his LiDE100.

Someone told me to add gnomescan after having upgraded to Ubuntu Jaunty,
that's what I did, but unfortunately that didn't helped for the Canoscan;
see the test output:

root@ubuntu:~# lsusb
Bus 001 Device 003: ID 04a9:1904 Canon, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 058f:9360 Alcor Micro Corp. 8-in-1 Media Card Reader
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 004: ID 06b0:0001  
Bus 003 Device 003: ID 0471:0003 Philips
Bus 003 Device 002: ID 05e3:1205 Genesys Logic, Inc. Afilias Optical Mouse H3003
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

root@ubuntu:~# 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=0x1904 [CanoScan], chip=GL843) at libusb:001:003
found USB scanner (vendor=0x06b0 [ALVA B.V.], product=0x0001 [ALVA 544Satellite]) at libusb:003:004

(note: ALVA is NOT a scanner but my USB braille-display :-) I need it for
being able to help that person since he's sighted and I'm not ! )
 
  # 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.

root@ubuntu:~# scanimage -L

No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).

root@ubuntu:~#

Why isn't it possible to emulate a LiDE20 or 25 or so with another LiDE like
the 100 ? he's scanning only papers, not pictures, so he only needs grey and
for text purposes.

Another problem is that the model 100 is from 2008, and I can't advise him
to drop it on the trash and buy another ...

Which Canon people should I contact to ask for info so that a driver can be
made ? what kind of info is needed to build a driver for a scanner ?

On the other hand, which other comparable product from another manufacturer
should he buy in teh future ? he needs a small scanner and the LiDE series
are very very compact, that still make them attractive...

Grtnx,

Y)ellow P)enguin -> Y P

 

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[m. allan noah-3]

The LiDE 100 is a GL847 based scanner, the older LiDE 25/30 used a
completely different chip. Hence, there is no 'emulation'.
Fortunately, the GL841 is supported by SANE, and there is work ongoing
to add support for the later chips. Unfortunately, inexpensive
scanners require expensive drivers, so you may have to wait some time
:(

allan

PS- sane sees all unknown class usb devices as potential scanners,
since there (historically) was no scanner class. That is why it sees
your reader.

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