[sane-devel] imageCLASS MF4570dw tester available for two days

Yuval Levy ylevy at uwo.ca
Wed Dec 25 14:52:20 UTC 2013

I take inspiration from another thread on this mailing list to complete
the information.

On 12/25/2013 03:38 AM, Olaf Meeuwissen wrote:
> Your lists of configuration files below /etc/sane.d/ look suspiciously
> short.

My configuration seemed to be vanilla to me, but then I realize that
there is nothing vanilla in trying to help remote troubleshooting, so to
complete the information:

> [...] and expected canon configuration file (pixma.conf, I think)?

actually there is no pixma.conf file, just four (!) files starting with
canon.  quite confusing, but not critically so as I was able to get around.

>   $ dpkg-query --show libsane

libsane:amd64   1.0.23-0ubuntu3

the stock 'buntu one.  I only built and installed the sane-backends from

>   $ dpkg-query --listfiles libsane | grep /etc/sane.d/

I limited the grep only to the canon configuration files, of which the
one I changed is listed:


I added the following lines (based on the sane-find-scanner output):

# MF4570dw
usb 0x04a9 0x275a

and indeed /etc/sane.d/dll.conf has a default uncommented entry canon_dr.

Could it be that I am experiencing this bug:

I am not convinced, because
(1) scanimage does not even get to the errors during device I/O
(2) even blacklisting usbpl and usb_storage (for testing purposes only,
my father-in-law will kill me if his external USB backup drive stops
working) did not change anything.

And back to the specific situation with the MF4570dw, I am more
interested to get it to work over ethernet/wifi than over USB.

Any ideas?


On 12/24/2013 03:28 PM, Yuval Levy wrote:
> To whom it may concern:
> I am helping my father-in-law moving to Linux.  He has an imageCLASS
> MF4570dw all-in-one.  sane-backends from Ubuntu's repository do not
> support it, but I found it listed for the git version, so I built the
> git version of sane-backend.
> The machine has both USB and Ethernet.
> sane-find-scanner reports found USB scanner (vendor=0x04a9 [Canon Inc],
> product=0x275a [MF4570dw]) at libusb:001:004
> however scanimage -L did not find it.  I read all README, FAQs, and
> manpages that I could find, to no avail.
> I also tried to connect via Ethernet.  After adding the entry
> bjnp:// to /etc/sane.d/picma.conf it returns the
> following output:
> [pixma] udp_command: no data received (recv): Connection refused[pixma]
> udp_command: no data received (recv): Connection refused[pixma]
> udp_command: no data received (recv): Connection refused[pixma] Cannot
> read scanner make & model: v
> I did set PIXMA_EXPERIMENT=1 but it did not make any difference.
> This is a time-limited opportunity.  I am here for the next two days
> (Christmas), have access to the device, have a little bit of time on my
> hand to run the tests you need me to run, and I am good enough with the
> tools to submit a source code diff for review.
> Any kind soul around willing to guide me through the process of testing?
>  I would like to leave my in-laws with a working scanner and in the
> process contribute to your project.
> Happy Holidays!

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