Le 2021-03-26 21:11, Swen Dietrich via sane-devel a écrit :
Hi all,
That device has some problems as a printer with the supplied driver
under Linux
tbh for me the device worked wonderfully out of the box.
Printing works fine and all the settings are also auto detected and
work
as far as I can tell (e. g. duplex printing, scaling, colour, ....)
Both flatbed and adf scanning worked until recently.
It was all fine and dandy until some idiot (me) uninstalled the wrong
debian package and now scannign no longer works.
Simple-scan said it can't connect to the device.
scanimage reports this:
> sudo scanimage -L
device `escl:http://127.0.0.1:60000' is a ESCL CNMF745C/746C (USB)
flatbed scanner
> sudo scanimage > /tmp/output
Output format is not set, using pnm as a default.
scanimage: open of device escl:http://127.0.0.1:60000 failed: Out of
memory
This isn't a support forum but when someone can tell me which debian
package I need to get this working again this would be truly wonderful.
The problem seems to come from your version of sane, can you give me the
result of :
# scanimage --version
I think the problem comes from that!
The simple solution would be to install saine-airescan at ipp-usb
Thierry
I'm running
Linux hostname 5.10.0-3-amd64 #1 SMP Debian 5.10.13-1 (2021-02-06)
x86_64 GNU/Linux
Greetings from germany
Swen Dietrich
On 26/03/2021 17.59, Andrea Croci wrote:
Hello,
I have this same device and initially had some problems with it. I was
in contact with Alexander and did some tests for him (not full though,
I
got sidetracked after a while).
The device works with both airscan and eSCL (maybe they are even the
same thing, although they are listed as two devices by scanimage -L).
The only problem is that they always get like a different address or
something and they are not always addressed properly by scanimage. But
it's not a big deal, one only has to play with the names a little bit
and it will work.
I now use gscan2pdf because it saves me time with the conversion to
pdf
files, especially if I only want to save a selection of the pages and
not all of them. There I have the same problem: when I open gscan2pdf
after not having used it for a while, it doesn't find the scanner. I
have to let it scan for devices again and then it will find it and
work
great.
That device has some problems as a printer with the supplied driver
under Linux (Canon is terrible at customer service here), but that's a
story for the CUPS mailing-list. Swen, if you have problems setting it
up as a printer, you may mail me and I'll tell you how I got it (after
days of trying).
Regards.
On 26.03.21 17:40, Ralph Little wrote:
Hi,
On 2021-03-26 8:24 a.m., Swen Dietrich via sane-devel wrote:
Hello SANE Developers,
the list of backends said "Testers needed!" for my printer.
I'm owner of a Canon iSensys MF746Cx.
How can I help with driver development for this printer?
Usually, if the appropriate backend picks it up, testing merely
involves
trying all of the available options.
Said support might be wrong (flatbed scan area for example) so we
would
correct those things.
The device was not connected to the internet yet and thus the
factory-drivers are still installed on the printer.
Bus 003 Device 048: ID 04a9:27fa Canon, Inc. MF745C/746C
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.10
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x04a9 Canon, Inc.
idProduct 0x27fa
bcdDevice 0.00
iManufacturer 1 Canon
iProduct 2 MF745C/746C
iSerial 3 <snip!>
bNumConfigurations 1
This device is not listed at all on our "Supported Devices" page
(based
on the supplied USB ids) so at this point I guess we don't know what
protocols are supported.
I see from a datasheet that this is a fairly new device, perhaps
released in 2019. Older Canon devices used MFNP and BJNP protocols.
However, IIRC, modern Canon devices are not and are instead using
eSCL.
Cheers,
Ralph
