[sane-devel] Canon PIXMA MX925 - scan process now broken (does not end)

Rolf Bensch rolf at bensch-online.de
Thu Aug 31 12:48:32 UTC 2017


Hi Stephen,

Sounds great ... and I found a bug in the mp150 code. Your scanner
hasn't received the XML end of scan dialog. So you couldn't be able to
start a new scan...

Please test the version +git20170823 from my test ppa. This is the most
recent SANE version from git *with* the bug fix.

Many thanks for your help.

Cheers,
Rolf

Am 30.08.2017 um 17:28 schrieb Stephen Weston:
> Rolf,
> 
> I have tried it out with the '$SANE_USB_WORKAROUND=1 scanimage -T'
> command on a none-working system and it has not made any difference. The
> scanner continues to look busy after the initial scan and a second scan
> fails as before.
> 
> I had much more success with the git+20170627 version as that worked
> okay as you suggested it might.
> 
> I am keen to help, test and do what I can to help get the scanner
> working correctly, but just to let you know I will be unable to do much
> until the 15th September. I am moving home and my ISP won't be
> connecting my new place to the internet until then (and thats assuming
> no hiccups). I will have mobile internet, so I can receive and send
> emails at least, but nothing data heavy.
> 
> Kind regards,
> Stephen
> 
> On 29 August 2017 at 11:52, Rolf Bensch <rolf at bensch-online.de
> <mailto:rolf at bensch-online.de>> wrote:
> 
>     Hi Stephen,
> 
>     Please test an older version from my test ppa: git20170627. I hope that
>     this version is running.
> 
>     On a not working system, please test this:
>     $ SANE_USB_WORKAROUND=1 scanimage -T
> 
>     I still cannot reproduce this problem on my system, even in a VirtualBox
>     VM with installed Ubuntu 17.04.
> 
>     Many thanks for your help.
> 
>     Cheers,
>     Rolf
> 
> 
>     Am 26.08.2017 um 14:57 schrieb Stephen Weston:
>     > Hi,
>     >
>     > Had a go with the Ubuntu test ppa after a fresh install of Ubuntu
>     17.04
>     > in VirtualBox. The terminal output is as below. As you can see the
>     > scanner was successfully detected and the initial scan worked, but the
>     > scanner was left in a busy 'scanning...' state and a second attempt at
>     > scanning did not work.
>     >
>     >     stephen at stephen-VirtualBox:~$ scanimage --version
>     >     scanimage (sane-backends) 1.0.27git; backend version 1.0.27
>     >
>     >
>     >
>     >     stephen at stephen-VirtualBox:~$ scanimage -L
>     >     device `pixma:MX530_192.168.1.68' is a CANON Canon PIXMA MX530
>     >     Series multi-function peripheral
>     >
>     >
>     >
>     >     stephen at stephen-VirtualBox:~$ scanimage -T
>     >     scanimage: scanning image of size 638x877 pixels at 24 bits/pixel
>     >     scanimage: acquiring RGB frame, 8 bits/sample
>     >     scanimage: reading one scanline, 1914 bytes...    PASS
>     >     scanimage: reading one byte...        PASS
>     >     scanimage: stepped read, 2 bytes...     PASS
>     >     scanimage: stepped read, 4 bytes...     PASS
>     >     scanimage: stepped read, 8 bytes...     PASS
>     >     scanimage: stepped read, 16 bytes...     PASS
>     >     scanimage: stepped read, 32 bytes...     PASS
>     >     scanimage: stepped read, 64 bytes...     PASS
>     >     scanimage: stepped read, 128 bytes...     PASS
>     >     scanimage: stepped read, 256 bytes...     PASS
>     >     scanimage: stepped read, 512 bytes...     PASS
>     >     scanimage: stepped read, 1024 bytes...     PASS
>     >     scanimage: stepped read, 2048 bytes...     PASS
>     >     scanimage: stepped read, 2047 bytes...     PASS
>     >     scanimage: stepped read, 1023 bytes...     PASS
>     >     scanimage: stepped read, 511 bytes...     PASS
>     >     scanimage: stepped read, 255 bytes...     PASS
>     >     scanimage: stepped read, 127 bytes...     PASS
>     >     scanimage: stepped read, 63 bytes...     PASS
>     >     scanimage: stepped read, 31 bytes...     PASS
>     >     scanimage: stepped read, 15 bytes...     PASS
>     >     scanimage: stepped read, 7 bytes...     PASS
>     >     scanimage: stepped read, 3 bytes...     PASS
>     >
>     >
>     >
>     >     stephen at stephen-VirtualBox:~$ scanimage -T
>     >     scanimage: scanning image of size 638x877 pixels at 24 bits/pixel
>     >     scanimage: acquiring RGB frame, 8 bits/sample
>     >     scanimage: reading one scanline, 1914 bytes...    FAIL Error:
>     Error
>     >     during device I/O
>     >
>     >
>     >
>     > Thanks. I appreciate your work in getting the scanner sorted.
>     > Kind regards,
>     > Stephen
>     >
>     > On 26 August 2017 at 10:50, Rolf Bensch <rolf at bensch-online.de
>     <mailto:rolf at bensch-online.de>
>     > <mailto:rolf at bensch-online.de <mailto:rolf at bensch-online.de>>> wrote:
>     >
>     >     Hi,
>     >
>     >     I just uploaded a version without the sanei threading changes to my
>     >     Ubuntu test ppa
>     >     (https://launchpad.net/~rolfbensch/+archive/ubuntu/sane-test
>     <https://launchpad.net/~rolfbensch/+archive/ubuntu/sane-test>
>     >     <https://launchpad.net/~rolfbensch/+archive/ubuntu/sane-test
>     <https://launchpad.net/~rolfbensch/+archive/ubuntu/sane-test>>). Please
>     >     test this version and report your results.
>     >
>     >     Many thanks for your help.
>     >
>     >     Cheers,
>     >     Rolf
>     >
>     >     Am 12.08.2017 um 05:32 schrieb Olaf Meeuwissen:
>     >     > Hi Kay,
>     >     >
>     >     > Kay Drangmeister writes:
>     >     >
>     >     >> Hi,
>     >     >>
>     >     >> I am using the sane libs (Ubuntu 16.04) with a Canon Pixma MX925
>     >     >> successfully for years now. Since some time (days, maybe weeks), the
>     >     >> scan process does not terminate well.
>     >     >
>     >     > There were two recent threads about similar issues that may be of
>     >     > interest
>     >     >
>     >     >
>     >     https://lists.alioth.debian.org/pipermail/sane-devel/2017-July/035481.html
>     <https://lists.alioth.debian.org/pipermail/sane-devel/2017-July/035481.html>
>     >   
>      <https://lists.alioth.debian.org/pipermail/sane-devel/2017-July/035481.html
>     <https://lists.alioth.debian.org/pipermail/sane-devel/2017-July/035481.html>>
>     >     >
>     >   
>      https://lists.alioth.debian.org/pipermail/sane-devel/2017-July/035520.html
>     <https://lists.alioth.debian.org/pipermail/sane-devel/2017-July/035520.html>
>     >     <https://lists.alioth.debian.org/pipermail/sane-devel/2017-July/035520.html
>     <https://lists.alioth.debian.org/pipermail/sane-devel/2017-July/035520.html>>
>     >     >
>     >     > Note, both threads continue on
>     >     >
>     >     >
>     >     https://lists.alioth.debian.org/pipermail/sane-devel/2017-August/thread.html
>     <https://lists.alioth.debian.org/pipermail/sane-devel/2017-August/thread.html>
>     >     <https://lists.alioth.debian.org/pipermail/sane-devel/2017-August/thread.html
>     <https://lists.alioth.debian.org/pipermail/sane-devel/2017-August/thread.html>>
>     >     >
>     >     > You could try reverting to 1.0.25+git20150528
>     >     >
>     >     > @Rolf> I hope these recent problem don't have anything to do with my
>     >     >        sanei threading changes.
>     >     >
>     >     >> [...]
>     >     >
>     >     > Hope this helps,
>     >     > --
>     >     > Olaf Meeuwissen, LPIC-2            FSF Associate Member since 2004-01-27
>     >     >  GnuPG key: F84A2DD9/B3C0 2F47 EA19 64F4 9F13  F43E B8A4 A88A F84A 2DD9
>     >     >  Support Free Software                        https://my.fsf.org/donate
>     >     >  Join the Free Software Foundation              https://my.fsf.org/join
>     >     >
>     >
>     >     --
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