[sane-devel] Epson Perfection V800 error

[Ron Falkowski]

We are using 1.0.24.

Right now the problem seems to be that scanimage errors on any command that
calls the V800 scanner by its device name, but it can interact with it
otherwise. For example, right now we have two scanners plugged in, a V800
and a V700. "scanimage -L" returns:

"device 'epson2:libusb:001:008' is a Epson GT-X980 flatbed scanner
 device 'epson2:libusb:001:009' is a Epson GT-X900 flatbed scanner'

"scanimage -h" will return the default help information as well as
device-specific information for the V800, since it is the first scanner on
the device list. "scanimage -h -d epson2:libusb:001:009" will return
device-specific information for the V700. However, "scanimage -h -d
epson2:libusb:001:008" will return the error "scanimage: open of device
epson2:libusb 001:008 failed: Invalid argument".

Likewise, we can actually currently scan with the V800. The command
"scanimage --format=tiff >test.tif" without specifying a device name will
correctly run a scan using the V800 which looks fine. We can use all of the
other options as well, including device-specific ones. But again,
"scanimage --device-name=epson2:libusb:001:009 --format=tiff >test.tif"
will scan using the V700 as expected, while "scanimage
--device-name=epson2:libusb:001:008 --format=tiff >test.tif" returns the
"Invalid argument" error.

On Wed, May 6, 2015 at 11:49 PM, Olaf Meeuwissen <olaf.meeuwissen at avasys.jp>
wrote:

>
> Ron Falkowski writes:
>
> > Hello all,
> >
> > I've been using an array of V700 scanners for research purposes with no
> > problems. Since they've been discontinued, we've bought a few V800s to
> test
> > and make sure they work with our current system. I saw this message (
> >
> http://lists.alioth.debian.org/pipermail/sane-devel/2015-February/033155.html
> )
> > which claims that the V800 will work with one addition to the config
> files.
> > I've made that change and the new scanners still will not work.
> "scanimage
> > -L" recognizes the new scanner (as a GT-X980, as expected), but
> attempting
> > a scan fails.
> >
> > I tried running the following command:
> > scanimage --device-name=epson2:libusb:001:119 --format=tiff >test.tif
> >
> > That command works with the V700 scanners, but gives the error
> "scanimage:
> > open of device epson2:libusb:001:119 failed: Invalid argument" for the
> > V800. Is there some part of the command that is necessary for the V800s
> > that I'm missing? Is some additional plugin like iscan that is also
> > required?
>
> Unlike the V700, the V800 does not require any additional interpreter
> plugin, if that's what you mean.
>
> Have you checked the sane-backends version you are using?  The post you
> refer to mentions 1.0.24 (on Debian's jessie).
>
> Another possibility is a case of unsupported or conflicting default
> parameters.  Have a look at the output of scanimage --help.
>
> Hope this helps,
> --
> Olaf Meeuwissen, LPIC-2           FLOSS Engineer -- AVASYS CORPORATION
> FSF Associate Member #1962               Help support software freedom
>                  http://www.fsf.org/jf?referrer=1962
>
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