Discussion:
Epson 210 all in one is completely supported by sane. But in Ubuntu 16.04 printer part working, but scanner fails to identify.
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Aravind Gopal
2017-01-26 11:18:39 UTC
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Please help

Officially Epson 210 all in one is completely supported by sane.
But in Ubuntu 16.04 printer part working, but scanner fails to identify.
(But working fine with Win 10(so no problem with device))

Installed latest version of Epson driver and OS Updated .
OS: Kubuntu 16.04.1
Kernel: 4.4.0.38-generic
KDE Plasma: 5.5.5
QT Version: 5.5.1
OS type 64 bit

Sane : 1.0.25 + git20150528-1ubuntu2

Cannot scan. Printer(hardware) part is identified is working fine. but
scanner part is identified in konsole but xsane gives an error message
"Failed to open device 'epkowa:usb:004:002':Device Busy"

In console
" sudo sane-find-scanner -v
[sudo] password for swami:
This is sane-find-scanner from sane-backends 1.0.25git

# 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.

searching for SCSI scanners:
checking /dev/scanner... failed to open (Invalid argument)
checking /dev/sg0... failed to open (Invalid argument)
checking /dev/sg1... failed to open (Invalid argument)
checking /dev/sg2... failed to open (Invalid argument)
checking /dev/sg3... failed to open (Invalid argument)
checking /dev/sg4... failed to open (Invalid argument)
checking /dev/sg5... failed to open (Invalid argument)
checking /dev/sg6... failed to open (Invalid argument)
checking /dev/sg7... failed to open (Invalid argument)
checking /dev/sg8... failed to open (Invalid argument)
checking /dev/sg9... failed to open (Invalid argument)
checking /dev/sga... failed to open (Invalid argument)
checking /dev/sgb... failed to open (Invalid argument)
checking /dev/sgc... failed to open (Invalid argument)
checking /dev/sgd... failed to open (Invalid argument)
checking /dev/sge... failed to open (Invalid argument)
checking /dev/sgf... failed to open (Invalid argument)
checking /dev/sgg... failed to open (Invalid argument)
checking /dev/sgh... failed to open (Invalid argument)
checking /dev/sgi... failed to open (Invalid argument)
checking /dev/sgj... failed to open (Invalid argument)
checking /dev/sgk... failed to open (Invalid argument)
checking /dev/sgl... failed to open (Invalid argument)
checking /dev/sgm... failed to open (Invalid argument)
checking /dev/sgn... failed to open (Invalid argument)
checking /dev/sgo... failed to open (Invalid argument)
checking /dev/sgp... failed to open (Invalid argument)
checking /dev/sgq... failed to open (Invalid argument)
checking /dev/sgr... failed to open (Invalid argument)
checking /dev/sgs... failed to open (Invalid argument)
checking /dev/sgt... failed to open (Invalid argument)
checking /dev/sgu... failed to open (Invalid argument)
checking /dev/sgv... failed to open (Invalid argument)
checking /dev/sgw... failed to open (Invalid argument)
checking /dev/sgx... failed to open (Invalid argument)
checking /dev/sgy... failed to open (Invalid argument)
checking /dev/sgz... failed to open (Invalid argument)
# No SCSI scanners found. If you expected something different, make sure
that
# you have loaded a kernel SCSI driver for your SCSI adapter.

searching for USB scanners:
checking /dev/usb/scanner... failed to open (Invalid argument)
checking /dev/usb/scanner0... failed to open (Invalid argument)
checking /dev/usb/scanner1... failed to open (Invalid argument)
checking /dev/usb/scanner2... failed to open (Invalid argument)
checking /dev/usb/scanner3... failed to open (Invalid argument)
checking /dev/usb/scanner4... failed to open (Invalid argument)
checking /dev/usb/scanner5... failed to open (Invalid argument)
checking /dev/usb/scanner5... failed to open (Invalid argument)
checking /dev/usb/scanner7... failed to open (Invalid argument)
checking /dev/usb/scanner8... failed to open (Invalid argument)
checking /dev/usb/scanner9... failed to open (Invalid argument)
checking /dev/usb/scanner10... failed to open (Invalid argument)
checking /dev/usb/scanner11... failed to open (Invalid argument)
checking /dev/usb/scanner12... failed to open (Invalid argument)
checking /dev/usb/scanner13... failed to open (Invalid argument)
checking /dev/usb/scanner14... failed to open (Invalid argument)
checking /dev/usb/scanner15... failed to open (Invalid argument)
checking /dev/usbscanner... failed to open (Invalid argument)
checking /dev/usbscanner0... failed to open (Invalid argument)
checking /dev/usbscanner1... failed to open (Invalid argument)
checking /dev/usbscanner2... failed to open (Invalid argument)
checking /dev/usbscanner3... failed to open (Invalid argument)
checking /dev/usbscanner4... failed to open (Invalid argument)
checking /dev/usbscanner5... failed to open (Invalid argument)
checking /dev/usbscanner6... failed to open (Invalid argument)
checking /dev/usbscanner7... failed to open (Invalid argument)
checking /dev/usbscanner8... failed to open (Invalid argument)
checking /dev/usbscanner9... failed to open (Invalid argument)
checking /dev/usbscanner10... failed to open (Invalid argument)
checking /dev/usbscanner11... failed to open (Invalid argument)
checking /dev/usbscanner12... failed to open (Invalid argument)
checking /dev/usbscanner13... failed to open (Invalid argument)
checking /dev/usbscanner14... failed to open (Invalid argument)
checking /dev/usbscanner15... failed to open (Invalid argument)
found USB scanner (vendor=0x04b8 [EPSON], product=0x08a1 [EPSON L210
Series]) at libusb:004:002
# 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.
done "

Please Help to solve the problem..

see the attached screenshot pic of error messages of iScan, xsane, simple
scan and printer config window etc.
--
Aravind Gopal
Olaf Meeuwissen
2017-01-29 01:47:50 UTC
Permalink
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Hi Aravind,
Post by Aravind Gopal
Please help
Officially Epson 210 all in one is completely supported by sane.
The L210, NX210, SX210 and TX210 series are supported, yes.
Post by Aravind Gopal
But in Ubuntu 16.04 printer part working, but scanner fails to identify.
(But working fine with Win 10(so no problem with device))
Installed latest version of Epson driver and OS Updated .
OS: Kubuntu 16.04.1
Kernel: 4.4.0.38-generic
KDE Plasma: 5.5.5
QT Version: 5.5.1
OS type 64 bit
Sane : 1.0.25 + git20150528-1ubuntu2
Cannot scan. Printer(hardware) part is identified is working fine. but
scanner part is identified in konsole but xsane gives an error message
"Failed to open device 'epkowa:usb:004:002':Device Busy"
Hmm, the epkowa backend is an external SANE backend. It is *not* part
of the libsane package you installed. I assume you installed the iscan
bundle available from:

http://support.epson.net/linux/en/iscan_c.php?version=1.0.4
Post by Aravind Gopal
In console
" sudo sane-find-scanner -v
[...snip...]
found USB scanner (vendor=0x04b8 [EPSON], product=0x08a1 [EPSON L210
Series]) at libusb:004:002
OK, so you've got an L210 Series device.
Post by Aravind Gopal
Please Help to solve the problem..
see the attached screenshot pic of error messages of iScan, xsane, simple
scan and printer config window etc.
OK, so you've got iscan installed ;-)

Looks like you have a permissions problem. Your user needs to be part
of the scanner group. Is it? You can check with

$ groups | grep scanner

If this produced no output, you can fix that with

$ sudo adduser swami scanner

Then log out of you desktop session and back in again. If it was indeed
a permissions problem, you should now be able to use your scanner.

Hope this helps,
--
Olaf Meeuwissen, LPIC-2 FSF Associate Member since 2004-01-27
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