[sane-devel] libusb scanner not found

Dan Christian robodan@idiom.com
Mon, 20 Sep 2004 09:03:16 -0700

This used to work (under FC1/2.4), but no longer does under Fedora Core
 2 (Linux 2.6). I'm running sane-backends-1.0.14-3 on an Athlon (single

I have an Epson Perfection 2450.  I can see it with lsusb or
sane-find-scanner, but scanimage -L or xsane will fail to open it.

/etc/sane.d/epson.conf only has one uncommented line:

If I run this (as root or user):
[root@MacCready dev]# SANE_DEBUG_EPSON=9 SANE_DEBUG_SANEI_USB=9 scanimage -L

I get this (excerpts):
... (this block shows up multiple times (probably for each backend))
[sanei_usb] sanei_usb_init: found libusb device (0x04b8/0x0112) interface 0
at libusb:001:007
[sanei_usb] sanei_usb_init: device 0x0000/0x0000 looks like a root hub
[sanei_usb] sanei_usb_init: found 1 devices
[sanei_debug] Setting debug level of epson to 9.
[epson] sane_init, >usb<
[epson] sane_init, >usb<
[epson] attach(usb)
[epson] SANE Epson Backend v1.5.0ek - 2002-12-02
[epson] attach(usb)
[epson] attach: opening usb
[epson] sane_start:  open (USB) failed: No such file or directory
[epson] sane_get_devices()

The device appears to be there, but then the backend doesn't recognize it.

Why isn't it recognizing the scanner any more?


PS.  Here is what lsusb returns:
[root@MacCready dev]# lsusb
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 002: ID 03f0:0512 Hewlett-Packard
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 007: ID 04b8:0112 Seiko Epson Corp. Perfection 2450
Bus 001 Device 001: ID 0000:0000