[sane-devel] CanoScan LiDE 25 found by sane-find-scanner but not scanimage

[Wolfram Heider]

On Sat, 02 Sep 2006 00:40:42 +0200, Warren Post <warren at copaninvest.com>  
wrote:

> My Canon CanoScan LiDE 25 is found by sane-find-scanner but not by
> scanimage (using sane-frontends-1.0.13-2mdk, xsane-0.97-2mdk, and
> sane-backends-1.0.17-2.1.20060mdk on Mandriva 2006). So far I have done
> the following:
>
> 1. Downloaded and installed a version of sane-backends (1.0.17) that
> supports the LiDE 25 to replace my older 1.0.16.
>
> 2. Insured that the scanner is seen by the USB subsystem and reports
> information consistent with man sane-plustek:
>
> [warren at gerencia ~]$ lsusb
> Bus 001 Device 002: ID 04a9:2220 Canon, Inc.
> Bus 001 Device 001: ID 0000:0000
>
> 3. Modified /etc/sane.d/plustek.conf per man sane-plustek.
> Specifically, I added the line "[usb] 0x04a9 0x2220". I have tried both
> "device auto" and not having a device line.

the entry should read "device /dev/usbscanner"
>
> 4. Insured that sane-find-scanner sees the LiDE 25 and reports
> information consistent with man sane-plustek:
>
> [warren at gerencia ~]$ sane-find-scanner [snip]
> found USB scanner (vendor=0x04a9 [Canon], product=0x2220 [CanoScan],
> chip=LM9832/3) at libusb:001:002
>
> 5. Run "scanimage -L" with debugging on, looking for clues. I can send
> the entire lengthy output if desired, but what jumps out at me is:
>
> [warren at gerencia ~]$ export SANE_DEBUG_PLUSTEK=24
> [warren at gerencia ~]$ export SANE_DEBUG_DLL=24
> [warren at gerencia ~]$ export SANE_DEBUG_SANEI_USB=24
> [warren at gerencia ~]$ scanimage -L
> [snip]
> [plustek] Checking for 0x04a9-0x2206
> [plustek] Checking for 0x04a9-0x2207
> [plustek] Checking for 0x04a9-0x2208
> [plustek] Checking for 0x04a9-0x220d
> [plustek] Checking for 0x04a9-0x220e
> [plustek] Available and supported devices:
> [plustek] NONE.
> [snip]
>
> Sane-plustek checks for other Canon (vendor ID 0x04a9) scanners, but not
> for the one I am interested in (product ID 0x2200) and that is supported
> by 1.0.17. Huh? I check to make sure that my version of sane-backends
> really is 1.0.17 and not something earlier:
>
> [warren at gerencia ~]$ rpm -q sane-backends
> sane-backends-1.0.17-2.1.20060mdk
>
> I have searched the sane mailing list archives, read the sane-plustek
> homepage, and googled for clues on what might be wrong on my end to
> cause a backend to not check for a supported scanner, but have
> come up empty. Any ideas on what else I should be looking at to solve
> this issue?
>
I'm not familiar with Mandriva. If there exists a usb.usermap in  
/etc/hotplug it should be modified due to  
/usr/share/doc/packages/sane/sane-backends/plustek/Plustek-USB.txt.

Last not least the plustek-entry in /etc/sane.d/dll.conf should be  
uncommented.

Additionally you should make sure that the scanner.o module isn't loaded  
and that possible remnants of the prior sane-installation are removed  
completely.

Regards
Wolfram Heider