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

[Mogens Jaeger]

Tom Mitchell wrote:
> 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
> 
> 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.
> 
> #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
> 
> 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
> thanks
> Tom
> 
I've got a scanner like yours, on a SuSE installation
I found, that downgrading the USB to ver. 1.1 solved the problem, but 
that it was'nt acceptable, so I bought a firewire cable, and now it runs 
at full speed.

Sincerely Mogens Jæger