I'm trying to scan a document with a Epson ET-2750-Scanner using xsane. I always get the errorcode: "Invalid argument".
Printing with the ET-2750 works fine, just scanning doesn't. I've tried connecting it over USB or Wifi, it doesn't make a difference.
xsane finds the printer:
But it can't scan:
What do I do?
I mean to install scanner Epson 3170 Photo under Ubuntu 20.04. I post at the bottom the (usual) installation steps I took prior to checking if my PC finds the scanner.
Then, sane-find-scanner found the scanner
$ sudo sane-find-scanner
# sane-find-scanner will now attempt to detect your scanner. If the
# result is different from what you expected, first make sure your
# scanner is powered up and properly connected to your computer.
# No SCSI scanners found. If you expected something different, make sure that
# you have loaded a kernel SCSI driver for your SCSI adapter.
found USB scanner (vendor=0x06cb, product=0x009a) at libusb:001:005
found USB scanner (vendor=0x04b8 [EPSON], product=0x0116 [EPSON Scanner]) at libusb:001:009
# Your USB scanner was (probably) detected. It may or may not be supported by
# SANE. Try scanimage -L and read the backend's manpage.
# Not checking for parallel port scanners.
# Most Scanners connected to the parallel port or other proprietary ports
# can't be detected by this program.
Note: without sudo I got the error messages
could not open USB device 0x1d6b/0x0003 at 002:001: Access denied (insufficient permissions)
...
I mean to fix this later on, if I manage to overcome the following problems, unless this is part of the problem, which I guess it is not).
Then scanimage did not find the scanner
$ sudo scanimage -L
No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).
So I edited /etc/sane.d/dll.conf,
to add epkowa (it wasn't listed), and comment epson2; epson was already commented.
The page SANE: External Backends (Drivers) mentions that the 3170 is supported by epkowa ("requires DFSG non-free iscan-plugin-gt-9400 overseas version of the GT-9400UF").
So I tried installing iscan-plugin-gt-9400.
It is only available as an rpm, not deb.
Looking for related info, I found in [Solved] Successful Image Scan Installation for EPSON USB Scanner and Epson Perfection 3170 Photo Scanner (aka GT-9400) on Ubuntu Feisty that going through the conversion rpm -> deb and installing them (two packages, actually) is the only way to make the 3170 work.
I am not certain this changed from the time of those posts, but I decided trying.
Following instructions above, and additionally:
Using Architecture: i386 amd64 instead of Architecture: i386, amd64 in debian/control files (otherwise error dpkg-gencontrol: error: 'i386,' is not a legal architecture in list 'i386, amd64'
is thrown).
Executing export LD_LIBRARY_PATH="/usr/lib/x86_64-linux-gnu"
since I was getting several errors
$ fakeroot debian/rules binary
...
dpkg-shlibdeps: error: cannot find library libjpeg.so.62 needed by debian/iscan/usr/lib/sane/libsane-epkowa.so.1.0.15 (ELF format: 'elf32-i386' abi: '0101000300000000'; RPATH: '')
...
dpkg-shlibdeps: error: cannot continue due to the errors listed above
Note: libraries are not searched in other binary packages that do not have any shlibs or symbols file.
To help dpkg-shlibdeps find private libraries, you might need to use -l.
dh_shlibdeps: error: dpkg-shlibdeps -Tdebian/iscan.substvars debian/iscan/usr/lib/sane/libsane-epkowa.so.1.0.15 debian/iscan/usr/lib/libesmod.so.1.1.0 debian/iscan/usr/bin/iscan returned exit code 2
dh_shlibdeps: error: Aborting due to earlier error
make: [debian/rules:27: binary-arch] Error 2 (ignored)
...
I managed to create iscan_2.10.0-2_amd64.deb (is it expected to get 2.10.0-2 instead of 2.10.0-1?) and iscan-plugin-gt-9400_1.0.0-2_amd64.deb.
Then I installed both packages with
$ sudo gdebi iscan_2.10.0-2_amd64.deb
$ sudo gdebi iscan-plugin-gt-9400_1.0.0-2_amd64.deb
(I overwrote here my previously created /etc/sane.d/epkowa.conf).
Then I plugged the scanner and turned it on. And the I got error
$ iscan
iscan: error while loading shared libraries: libjpeg.so.62: wrong ELF class: ELFCLASS64
How can I proceed to get the scanner to work? (I expect once this problem is solved, there will be a few hurdles until it is working)
What I did:
sudo apt-get install sane sane-utils libsane xsane
Download imagescan-bundle-ubuntu-19.10-3.62.0.x64.deb.tar.gz
Expand archive above and inside imagescan-bundle-ubuntu-19.10-3.62.0.x64.deb execute ./install.sh
Add myself to group lp: sudo adduser $USER lp
Reboot
Verify
$ groups
user1 adm lp cdrom sudo dip plugdev lpadmin lxd sambashare vboxusers
Plug the scanner in the USB and turn it on.
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