Hello Loius,
Thank you for your reply. Avahi sees the scanner at Port 80. On ubuntu
20.04 I do have a newer version of SANE, with which the scanner works
with the escl backend. That's fine for now. The only problem is that the
options for the scanner are reduced to a very minimum (no brightness
control, for instance). On 18.04 (Desktop) I solved the problem by
installing the sane-airscan backend, which however has the same minimal
options as escl.
I would really love to see the day where Linux has a scanning program as
good as some of the proprietary programs for Windows: one that has all
the scanning options in one program (possibly selectable from a menu)
and ESPECIALLY that produces pdf files in the kB range instead of the
MB, like xsane does now (or did the last time I used it, about 10 years
ago).
Regards.
On 14.09.20 17:04, Louis Lagendijk wrote:
On Tue, 2020-09-08 at 06:20 +0200, Andrea Croci wrote:
Hello,
I have just installed a new Canon iSensys MF746Cx on Ubuntu 18.04 and
I
can't get it to scan. It' connected over the network. I haven't found
any driver or software for scanning on Canon's Website, so I was
hoping
I could do it with sane. I have read on the list of supported devices
that the MF741/743 are fully supported by the pixma backend.
So I activated the pixma backend in /etc/sane.d/dll.conf by
uncommenting
it and edited the /etc/sane.d/pixma.conf file by adding
"bjnp://address.here:8612". Scanimage -L gives me this message:
[bjnp] udp_command: ERROR - no data received (timeout = 5000)
[bjnp] bjnp_init_device_structure: Cannot read mac address, skipping
this scanner
[bjnp] udp_command: ERROR - no data received (timeout = 5000)
[bjnp] add_scanner: ERROR - Cannot read scanner make & model:
bjnp://192.168.2.103:8612/timeout=5000
Because CUPS adds the printer with the ipp protocol on port 631, I
tried
with other things as well (port 631, ipp protocol, net) but I always
get
the same error messages.
My Epson WF7620 works great with both the "epson2" and the "epkowa"
backends.
Any help would be appreciated. Thank you.
defining the scanner in pixma.conf is normally not required. Can you
please check the output of the _scanner._tcp entry from avahi-discover
and check the port number mentioned there. If that is 8612 it could
work with the pixma backend.
Newer Canon scanners apparently no longer support bjnp, so the pixma
backend only works over USB.(_scanner._tcp refers to port 80 or maybe
443) If you have a newer sane version (preferably 1.0.31) you can
probably use the escl backend.
/Louis
