[Tfug] Sane backends

Tue Nov 6 20:16:58 MST 2007

I do not know which version of Ubuntu you are using but if it is the
very latest one one I think I have heard (I think I am not 100% sure)
that they had some issues with
printers and scanners that were coming from problems with latest
Ubuntu itself (I hope I am just ill informed).  In your case just by
reading the code I can see that
you did not get past the files that are suppose to identify your
scanner. Did you make sure that your scanner is listed in
/usr/local/etc/sane.d/cannon.conf
(or  /etc/sane.d/cannon.conf). It is good that you checked the /dev to
see what kind of the devices you have. Maybe it is normal in Ubuntu to
have /dev/video
as a device node for scanner. Any Ubuntu guys around?

On 11/6/07, andy <andyjones at cox.net> wrote:
> Predrag, I appreciate the scanner instructions. I'm still working on
> this issue when I can. Lack of dev understanding is my problem.
>
> Right now, I get this:
>
> andy at andy-laptop:~$ scanimage -L
> device `v4l:/dev/video0' is a Noname USB 2.0 Camera virtual device
> device `plustek:libusb:002:003' is a Canon N650U/N656U USB flatbed
> scanner
>
> So it recognizes both the built in USB camera and the scanner. then....
>
> andy at andy-laptop:~$ scanimage --test
> scanimage: open of device v4l:/dev/video0 failed: Invalid argument
>
> There isn't any listing for scanner of any type in /dev, so I guess
> thats why it's try to use the video0? But I don't understand why since
> it appears to know the device is available. I just don't have any
> knowledge on devices, maybe I can google up something.
>
>
> Andy
>
>
> On Wed, 2007-10-31 at 16:20 -0700, Predrag Punosevac wrote:
> > Ok,
> > I assume that you checked sane web site and that your scanner is
> > supported:-)
> >
> > Since I am a FreeBSD guy I do this from the comand line.
> >
> > Step 1
> > Plug your scanner and reboot. (hot plug in usually doesn't work for
> > printers and scanners at least not the first time)
> >
> > On FreeBSD I would usually adjust permissions before I reboot by editing
> > /etc/devfs.conf file
> > with perm    /dev/uscanner0 0666 so that I can use scanner as a normal
> > user.
> > This file /etc/devfs.conf is FreeBSD specific file(OpenBSD) doesn't have
> > it for instance. You can check
> > ls -l /dev/uscanner0 to check the permissions and if it is not something
> > like rwx-rw-rw you should
> > do chmod 0666 /dev/uscanner0. This is probably ok in ubuntu
> >
> >
> > Step2
> > Type sane-find-scanner as a normal user.
> > Your scanner should be detected. Inspect the output
> >
> >
> >
> > Step3 Type scanimage --test
> > You scanner should react and give you output something like this
> >
> > [pedja@ /usr/home/Pedja]$ scanimage --test
> > [snapscan] Scanner warming up - waiting 8 seconds.
> > [snapscan] Scanner warming up - waiting 36 seconds.
> > scanimage: scanning image of size 2552x3507 pixels at 24 bits/pixel
> > scanimage: acquiring RGB frame, 8 bits/sample
> > scanimage: reading one scanline, 7656 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, 4096 bytes...  PASS
> > scanimage: stepped read, 8192 bytes...  PASS
> > scanimage: stepped read, 8191 bytes...  PASS
> > scanimage: stepped read, 4095 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
> >
> >
> >
> > Step4 It is possible that at this point scanner will complain that it
> > needs firmware (manufacture binaries)
> > Many scanneres do need them. Read how to create them from Winblows driver
> > that came with your scanner.
> > They should be put in
> >   /usr/local/share/sane/snapscan/your-firmwarefile.bin or what ever path
> > you find in /usr/local/etc/sane.d/snapscan.conf probably
> > in the case of Ubuntu /etc/sane.d/snapscan.conf as Linux is known to mix
> > system /etc/ and applications /usr/local/etc
> > You should also inspect
> > /usr/local/etc/sane.d/cannon.conf file.
> > You scanner should be listed there if not add it based on the dmesg. Look
> > previous lines for tamplets.
> >
> >
> > Step5 Something scanner conflicts with the printer. Plug and initiate
> > scanner first and then printer.
> >
> > Step6 If above fails that is probably due to the fact that Ubuntu kernel
> > is messed up (well documented on various mailing lists).
> > So check their forums for work abounds if there is any.
> >
> > Step 7 If above works. Try to scan from the Xsane GUI. It should work like
> > a charm. Adjust Xsane at your taste using GUI. I usually
> > scan documents into pdf files so I really hate image formats that are set
> > by default.
> >
> >
> > Let me know how it goes. I will be back home tonight at 9pm.
> >
> >
> > Cheers,
> > Predrag
> >
> >
> >
> >
> > On Wed, 31 Oct 2007 15:27:14 -0700, andy <andyjones at cox.net> wrote:
> >
> > > Thanks Predrag, here's what I've got, maybe you can see what I'm
> > > missing. Any suggestions would be appreciated.
> > >
> > > HP DV2000 notebook, dual core intel, 2 gig Ram, Ubuntu Feisty
> > >
> > > Included in the Ubuntu install was XSane the graphical interface for
> > > Sane which detects my Canon N650U scanner fine and shows the
> > > Plustek:libusb:001:006 backend. Everything looks good at this point, the
> > > application starts and appears to be normal, but when I try to acquire a
> > > preview or scan nothing happens, no lights, no motors, nothing, it
> > > simply times out and cancels.
> > >
> > > The fact that there are no apparent errors is what really has me
> > > stumped.
> > >
> > > Andy
> > >
> > >
> > > On Tue, 2007-10-30 at 23:28 -0700, Predrag Punosevac wrote:
> > >> Yes,
> > >> I do have some experience (my Epson scanner works flawlessly on FreeBSD)
> > >> but I am not a professional sys admin if that was the question.
> > >> By the way printing and scanning are identical on Linux and FreeBSD so I
> > >> probably could help.
> > >> Predrag
> > >>
> > >>
> > >> On Tue, 30 Oct 2007 22:25:23 -0700, andy <andyjones at cox.net> wrote:
> > >>
> > >> > Has anyone had any experience with SANE or know how to setup the SANE
> > >> > backend for scanners?
> > >> >
> > >> > Andy
> > >> >
> > >> >
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