[sane-devel] Sending confirmation about the pixma backend

Rolf Bensch rolf at bensch-online.de
Mon Oct 7 15:41:08 BST 2019

Hi Rogério,

I can see an error response in your log file.

To fix this I need an USB snoop file from Canon's ScanGear Software. You
can use wireshark for snooping (to enable USB support read this:

Many thanks for your help.


Am 06.10.19 um 15:14 schrieb Rogério Brito:
> Dear Rolf and others,
> On Oct 05 2019, Rolf Bensch wrote:
>> Am 05.10.19 um 00:00 schrieb Rogério Brito:
>>> Since I read the code and it mentioned that it needed testers, here is a
>>> report.  With the newer version of sane-backends, I can scan from the
>>> flatbed, as expected, and it works as well as I could expect (minus the
>>> fragility of this piece of hardware---disappointed with that, but that's not
>>> software-related, of course).
>> Many thanks for your report.
> You're welcome.
>> $ scanadf -d pixma:04A91855_103CD1 --source "Automatic Document Feeder"
>> --mode Lineart --output-file foo%02d.pbm
>> For testing ADF I prefer to use gscan2pdf and for "normal" scans xsane.
>> You can see some logs with:
>> $ SANE_DEBUG_PIXMA=11 gscan2pdf
> I tried:
> $ SANE_DEBUG_PIXMA=11 scanadf -d pixma:04A91855_103CD1 --source "Automatic Document Feeder" --mode Lineart --output-file foo%02d.pbm 2> scanadf.log
> I still couldn't get anything scanned from the ADF (even though I put there
> 3 sheets of paper).  I'm attaching the log to this message. Any help would
> be highly appreciated.
> If further information (or more detailed logs) are desired, please let me
> know.
>> You can decrease the log level to reduce log depth (see 'man sane-pixma'
>> for details).
> Thanks for the hint of that manpage.
>>> In the case of it being possible to return this device and get something
>>> else in its place, which manufacturer/model would be preferred to have
>>> *full* functionality with Free Software only? Any recommendations?
>> Please have a look at this table:
>> http://www.sane-project.org/sane-backends.html
> Regarding this device, unfortunately, it seems that I can't return it. :-(
> So, I will have to live with it for the moment.
> If/when possible, I may be getting another one more compatible and robust
> with Free Software support in the future. :-( OTOH, that table is huge.
> Which manufacturers are generally good bets/collaborative with Free Software
> developers in general?  HP?
>> Hope this helps.
> It sure did.
> Thanks,
> Rogério

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