[sane-devel] Issue with libsane 1.0.27+git20170719-xenial0 and Canon PIXMA MX495

[Rolf Bensch]

Hi Jean,

If you like, you can install SANE from the git repository as described
in INSTALL.linux (http://sane-project.org/docs.html) to find the problem
in the source code.

Most interesting are the commits from the master branch containing
changes for files starting with pixma after 27.05.2017. Usually these
commits come from Olaf Meeuwissen or from me. Please checkout these
commits, compile and test them. Easy to use git frontends are git-gui,
gitk or gitg. But you must checkout a commit with its sha1-id from the
command line (the 1st 6 to 7 characters of the sha1-id are enough to
identify the commit), e.g.: 

$ git checkout  c2594e
Note: checking out 'c2594e'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD ist jetzt bei c2594e9... Revert "pixma_imageclass.c: MF240 Series
supports only 300dpi for adf scans"

Please report the branch which 1st produces the problems you've reported
before.

Otherwise we must wait some weeks finding the problem commit.

Hope this helps.

Cheers,
Rolf


Am 25.07.2017 um 23:03 schrieb Jean Cérien:
>
> Hi Rolf, 
>
> First, thank you for looking into this.
> Second, there is no rush, as I have a workaround reverting to 1.0.25,
>
>
> I've tried with sane-release ppa, 
> scanimage (sane-backends) 1.0.27git; backend version 1.0.27
> and it works fine
>
> same with sane-test, which is ok,
>
> I've reverted to sane-git, and it fails again.
>
> Let me know if you need more info, 
>
> J.
>
>
> On Tue, Jul 25, 2017 at 3:59 AM, Rolf Bensch <rolf at fam-bensch.de
> <mailto:rolf at fam-bensch.de>> wrote:
>
>     Hi Jean,
>
>     Please try my other ppa's (SANE Release and SANE Test) with older
>     versions of SANE: https://launchpad.net/~rolfbensch
>     <https://launchpad.net/%7Erolfbensch> and report the
>     results. Then I'll have an idea where to search for the issue you
>     reported.
>
>     Please be patient. I'm on the move until end of August and I have less
>     time to work on SANE.
>
>     Hope this helps.
>
>     Cheers,
>     Rolf
>
>
>     Am 19.07.2017 um 23:22 schrieb Jean Cérien:
>     >
>     > Hello
>     > I have a multifunction canon pixma mx 495. Up
>     > to 1.0.25+git20150528-1ubuntu2, I only had one small issue, the ADF
>     > wasnt working, but flatbed was ok.
>     >
>     > Since 1.0.27+git20170719-xenial0, in flatbed mode, I can only
>     scan on
>     > page and then I get an error:
>     > scanimage: sane_read: Error during device I/O
>     >
>     > after scaning one page, trying to scan a second.
>     >
>     > Reverting to 1.0.25 restore the previous way of working and
>     allows me
>     > to scan multiple pages via flatbed.
>     >
>     > scanimage -L gives:
>     > device `pixma:04A91787' is a CANON Canon PIXMA MX490 Series
>     > multi-function peripheral
>     >
>     > I've tried 1.0.27 with  /etc/sane.d/pixma.conf from 1.0.25, but
>     > unfortunately, that does not work.
>     >
>     > As an FYI, the ADF reports 'Operation was cancelled' in 1.0.25
>     and .27
>     >
>     > Thanks for any help to have this scanner keep on working,
>     >
>     > Rgds
>     > J.
>     >
>     >
>
>
>

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