SOLVED: Canon Pixma G3501 at *Ubuntu 18.04 LTS: help needed to get the scanner running.

[Brian]

On Mon 14 Sep 2020 at 17:37:23 +0200, Bas G. Roufs wrote:

> Hello Brian.
> 
> Here below, I go through your input of yesterday evening, in your latest
> mail. I have been tweaking all day, while editing this mail. Good news: I DO
> manage to get the scanner running -indeed,via the "airscan" software you
> suggest. Check below for the details.

[Some snipping in order to concentrate on essentials].

Splendid! The 100% success record of sane-airscan is maintained. Just to
make it clear: you have not installed some fly-by-night software. Alex
Pevzner is committed to sane-airscan. It is in Debian and will soon be
in Ubuntu.

> Thank you very much for your guidance!

Your involvement with the issue is much appreciated. It takes two to
tango!
 
> Anyway, is it necessary to create or generate such a hostname or IP address?

No. It is shown by avahi-browse.
> 
> I DO access the admin panel at http://192.168.2.12.
> 
> "Bonjour": do you refer to this?
> 
> https://www.linuxbabe.com/ubuntu/set-up-cups-print-server-ubuntu-bonjour-ipp-samba-airprint

More of less.

> After quite some effort, I managed to find "bonjour" like this:
> 
> Main menu > System info and LAN settings > Confirm LAN settings > Print LAN
> details. There is also a way to view them on screen, however, the only way
> to see "everything" is to print a 2 pages list. However, I do not manage so
> far to get a digital version in .txt or .pdf.
> 
> "Bonjour" is at the end of the list, under the heading "Other settings".
> Next to "Bonjour", I see this word: "enable". The "Bonjour service name" is:
> "Canon G3000 series." So, apparently, bonjour is enabled by default.

Ok. Enabled. There is probably something I am misunderstanding but, as
you say, lets' park it.

> Results after the installation of sane-airscan:
> 
> bas at Viaconsensus-iter:~$ scanimage -L
> device `pixma:G3000_192.168.2.12' is a CANON Canon PIXMA G4000 Series
> multi-function peripheral
> device `airscan:w0:Canon G3000 series' is a WSD Canon G3000 series WSD
> network scanner
> bas at Viaconsensus-iter:~$

I wonder whether the pixma backend identifies the scanner correctly? We
may never know.

sane-airscan says you have a WSD device. See

  https://wiki.debian.org/SaneOverNetwork#wsd

> However, scanning documents IS possible now. Indeed, the "airscan" software
> you suggest, does work - in the case of Simple Scan, XSane, Skanlite and
> also Gscan2pdf. So far, Simple Scan delivers the best results - both for
> simple text pages and, by example, the front of a book, with a photo,
> drawing, etc. In all those case, I need to choose for wsd....airscan.
> However, so far, I did not manage to get together more then 1 page in 1 pdf.
> 
> On the other hand - I can scan now with the configuration I have. That's the
> main issue.

Any problems with sane-airscan should be pushed to the vey responsive
upstream.

Thank you for your co-operation, Bas. I will leave this issue now.

Regards,

Brian.