[sane-devel] Epson 2450 found by sane-find-scanner but not by scanimage

Mon Sep 25 00:35:50 UTC 2006

"Tom Mitchell" <trmitchell at hotmail.co.uk> writes:

> Hi Olaf,
> Sorry for the delay in replying I appreciate your help.
>
> 1)I have put all files back to their originals.
>
> 2)You asked
>
> "Do you have the epson backend disabled in /etc/sane.d/dll.conf?  I'd
> expect to see `epson:libusb:004:005' listed in the scanimage -L output
> as well."
>
> I didnt have the backend disabled. Both lines do not have an # in
> front of them.

Weird that you don't see epson:libusb:004:005 then.

> 3) I have tried to run  as user and got permission denied.

# I'm not familiar with your distribution, so I don't know how its
# *libsane.rules looks and how it handles hotplugging of scanners.

Hmm, is user part of the appropriate group (scanner, by default)?

> 4) As root the output of SANE_DEBUG_EPKOWA=127 scanimage > image.pnm
> 2> epkowa.log
>
> is
>
> [snip]> [epkowa] EPKOWA SANE Backend 2.1.0 - 2006-05-22
> [epkowa] attach(, 3)
> [epkowa] attach: opening
> [epkowa] attach_one_usb(libusb:004:004)
> [epkowa] EPKOWA SANE Backend 2.1.0 - 2006-05-22
> [epkowa] attach(libusb:004:004, 3)
> [epkowa] attach: opening libusb:004:004
> [epkowa] Found valid EPSON scanner: 0x4b8/0x112 (vendorID/productID)
> [epkowa] reset()
> [epkowa] send buf, size = 2
> [epkowa] buf[0] 1b .
> [epkowa] buf[1] 40 @
> [epkowa] receive buf, expected = 1, got = 0

Ouch!  The device is not talking back to you.  You should get a one
byte reply here, either 0x06 (ACK) or 0x15 (NAK).

> [snip]

Tom, can you repeat the scanimage command to get the USB debugging
info?  Like so:

  SANE_DEBUG_SANEI_USB=127 scanimage > image.pnm 2> epkowa-usb.log

Hope this helps,

>>"Tom Mitchell" <trmitchell at hotmail.co.uk> writes:
>>
>> > Hi,
>> > I am using an Asrock dual sata motherboard with AMD939 64 processor
>> > and sataII drive. I have installed PClinuxos minime0.93a a Mandriva
>> > based system on to a clean partion. I have also installed an Epson
>> > r220 usb printer which works really well.
>> > The Distro uses
>> > xsane 0.991_2tex
>> > sane-backends  1.0.18-1tex
>> > libusb         1.0.18-1tex
>> > kernel is 2.6.16.27.tex1.lve for i686
>> > kde version 3.5.3
>> >
>> > I am unable to get the scanner to work.
>> > It has worked before with Xandros3.0.2 and does with the simplymepis6
>> > livecd. So I know that the cables etc are ok.
>> >
>> > When booted with the scanner on
>> >
>> > sane-find-scanner results in
>> > found USB scanner (vendor=0x04b8 [EPSON], product=0x0112 [EPSON
>> > Scanner]) at libusb:004:004
>> >  # Your USB scanner was (probably) detected. It may or may not be
>> > supported by
>> >  # SANE. Try scanimage -L and read the backend's manpage.
>> >
>> > 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).
>> >
>> > this is both as root and as normal user.
>> >
>> > I have tried specifying the usb vendor and device in the epson.conf
>> > and epkowa.conf files in /etc/sane.d
>>
>>That is not necessary for either backend.
>>
>> > I have also modified /etc/udev/rules.d/70-libsane.rules
>> >
>> > ACTION!="add", GOTO="libsane_rules_end"
>> > SUBSYSTEM!="usb_device", GOTO="libsane_rules_end"
>> > as suggested for Iscan at
>> >
>> > http://www.avasys.jp/english/linux_e/faq_scan.html
>> >
>> > ACTION!="add", GOTO="libsane_rules_end"
>> > SUBSYSTEM!="usb", GOTO="libsane_rules_end"
>> >
>> > but this doesnt work.
>>
>>Do NOT change the *libsane.rules file.  Your distribution should have
>>done the right thing.  This change is only needed for *iscan.rules and
>>then only on those distributions that do not use "usb_device" for the
>>udev SUBSYSTEM name.  So far, we know about Mandriva 2006.0.
>>
>>BTW, this will be fixed in the next iscan release.
>>
>> > #lsusb states
>> > Bus 004 Device 004: ID 04b8:0112 Seiko Epson Corp. Perfection 2450
>> > Bus 004 Device 001: ID 0000:0000
>> > Bus 003 Device 001: ID 0000:0000
>> > Bus 002 Device 001: ID 0000:0000
>> > Bus 001 Device 003: ID 03f0:050c Hewlett-Packard 5219 Wireless Keyboard
>> > Bus 001 Device 001: ID 0000:0000
>> >
>> >
>> > If I switch the scanner off and on I then get
>> >
>> > # scanimage -L
>> > device `epkowa:libusb:004:005' is a Epson Perfection 2450 flatbed
>> scanner
>> > # scanimage >image.pnm
>> > scanimage: no SANE devices found
>>
>>Do you have the epson backend disabled in /etc/sane.d/dll.conf?  I'd
>>expect to see `epson:libusb:004:005' listed in the scanimage -L output
>>as well.
>>
>>Can you provide debugging output?  The following command will put the
>>debugging output in epkowa.log.
>>
>>   SANE_DEBUG_EPKOWA=127 scanimage > image.pnm 2> epkowa.log
>>
>> > Whatever I try I cant seem to get to see the device. I would be
>> > grateful for any help to resolve this.
>> > Similar problems exist with Xandros4.0
>>
>>Hope this helps,

-- 
Olaf Meeuwissen                          EPSON AVASYS Corporation, SE1
FSF Associate Member #1962           sign up at http://member.fsf.org/
GnuPG key: 6BE37D90/AB6B 0D1F 99E7 1BF5 EB97  976A 16C7 F27D 6BE3 7D90
Penguin's lib!       -- I hack, therefore I am --               LPIC-2