I used to have a networked USB Canon flatbed 9000F Scanner on a Synology box and it worked with Paperwork - perfectly! Unfortunately the box died and when I bought a new one it does not support USB devices (it’s a v7 DSM issue, apparently). OK, so I have networked my scanner using a Raspberry Pi and it appears to work very well - except on Paperwork! I have a Windows 10 machine and Paperwork just cannot see the scanner. Other scan programs can see the networked scanner and work perfectly. I also have a Linux (Mint) machine. Paperwork is v1.3.1. (and the instructions to install it just do NOT work. I had to use the Mint version). It tells me that a new version is available: Version 2.1.2 at https://openpaper.work/download/ - except that that page does NOT exist. If I try to setup my Canon scanner in this old (Linux) version, it can ‘see’ it but tells me that 'Error while scanning:libsane-quark:libinsane-opt[resolution] → set_value() error; 0x4000000 invalid value(4) - and this no matter what value I try!!
With such a plethora of problems where DO i go from here?
so I have networked my scanner using a Raspberry Pi and it appears to work very well - except on Paperwork!
To be blunt, I haven’t tested Paperwork + Windows + network scanners. I wasn’t even aware that Windows can access Linux network scanners.
Anyway, it’s a bit weird as there is nothing in the code preventing network scanners from working as far as I know. Which applications did you try ? Does Windows Fax and Scan work with your scanner ? (I’m asking because scanning on Windows is a big mess, but Windows Fax and Scan is usually a good reference for WIA2 support).
the instructions to install it just do NOT work
Which instructions ? There are about 5 ways to install Paperwork on Linux currently.
https://openpaper.work/download/- except that that page does NOT exist.
My bad. I didn’t realize that this URL was still referenced in old versions of Paperwork (Paperwork 1.3.1 is about 3 years old). I’ve fixed the URL (it’s a simple redirect to the home page now).
If I try to setup my Canon scanner in this old (Linux) version, it can ‘see’ it but tells me that 'Error while scanning:libsane-quark:libinsane-opt[resolution] → set_value() error; 0x4000000 invalid value(4) - and this no matter what value I try!!
Can you try submitting a test scan report with IronScanner please ? Even if the test fails, the test report should help me figure out what’s wrong.
With such a plethora of problems where DO i go from here?
My suggestion:
- first, a test scan report with IronScanner
- wait for me to have a look, see if I can fix the support of your Canon scanner (don’t hesitate to ask me again about it if you don’t get any reply from me for a while)
- once it’s done, have a look at OpenPaper - Paperwork - GNU/Linux to get a more recent version of Paperwork (one flaggued “Fresh from OpenPaper” to have the fix for your scanner included)
Thank yo so much, Jerome. I really appreciate your assistance! I know that the problem - fundamentally - is a Synology one, but I know they’ll not be interested. When I had the scanner ‘networked’ on the old Synology box, OpenPaper worked perfectly. And I found that I must have originally put the successful results of my Canon 9000F scanner in the Paperwork database - I recognise the scanned picture!! Anyway I have run Iron Scanner on the Linux (Mint v 20.3) and it worked. It did give me an error message which I repeat here:
Scanning page 1 …
[WARNING] [paperwork_backend.docscan.libinsane] [LibInsane] …/subprojects/libinsane/src/workarounds/opt_names.c:L113(opt_desc_filter): Found option ‘scan-resolution’ but option ‘resolution’ already exists too, so we can’t rename it.
[WARNING] [paperwork_backend.docscan.libinsane] [LibInsane] …/subprojects/libinsane/src/workarounds/opt_names.c:L113(opt_desc_filter): Found option ‘scan-resolution’ but option ‘resolution’ already exists too, so we can’t rename it.
But despite this it scanned and the correct image was shown.
I’ve also had a look on the Windows (10 64 bit) machine. It is very interesting. I have a program on this machine - SANEWin 1.0 (7786) - that scans via the networked scanner perfectly. It ‘sees’ the Canon scanner and will scan exactly as requested. The Paperwork version on this machine is v 2.1.2-40-g70f5542d. If I launch this and go into ‘settings’ I can only see a HP6950 inkjet printer/scanner that I have on the network. The Canon scanner does not show at all if I click on ‘device’. I also ran Windows Fax and Scan and it does NOT find the scanner and so it can’t be ‘run’. But, as I said above SANEWin does see it and runs perfectly! Now I realise this is an intermediate report on what is happening. I’ll investigate further - try up loading new versions of Paperwork etc as you have suggested but I thought you might like some information. Thank you again! Mike
Hi Jerome
A further comment:
You can see why I said the instructions don’t work!!
Kind regards
Mike