Hi folks, I am using SANE (scanimage (sane-backends) 1.0.22; backend version 1.0.22) on OpenWRT Backfire 10.3.1 on a Buffalo WZR-HP-G300NH, attempting to interface with a Samsung SCX4300 MFP.
This device is supported by the xerox_mfp backend, and has worked in the past. Now, for some odd reason, it is failing to detect the scanner. Here is the debugging output I have managed to obtain: root at gw:/# SANE_DEBUG_XEROX_MFP=128 SANE_DEBUG_SANEI_USB=4 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. # Also you need support for SCSI Generic (sg) in your operating system. # If using Linux, try "modprobe sg". [sanei_debug] Setting debug level of sanei_usb to 4. [sanei_usb] sanei_usb_init: marking existing devices [sanei_usb] sanei_usb_init: Looking for kernel scanner devices [sanei_usb] sanei_usb_init: Looking for libusb devices [sanei_usb] sanei_usb_init: found libusb device (0x067b/0x2303) interface 0 at libusb:001:007 [sanei_usb] store_device: add dn 0 with libusb:001:007 [sanei_usb] sanei_usb_init: found libusb device (0x04e8/0x342e) interface 0 at libusb:001:006 [sanei_usb] store_device: add dn 1 with libusb:001:006 [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner0' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner1' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner2' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner3' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner4' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner5' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner5' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner7' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner8' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner9' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner10' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner11' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner12' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner13' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner14' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usb/scanner15' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner0' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner1' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner2' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner3' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner4' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner5' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner6' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner7' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner8' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner9' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner10' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner11' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner12' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner13' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner14' in list [sanei_usb] sanei_usb_open: can't find device `/dev/usbscanner15' in list found USB scanner (vendor=0x067b [Prolific Technology Inc.], product=0x2303 [USB-Serial Controller]) at libusb:001:007 found USB scanner (vendor=0x04e8 [Samsung], product=0x342e [SCX-4300 Series]) at libusb:001:006 # 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. root at gw:/# As can be seen above, sane-find-scanner identifies the USB device representing the SCX4300. My dll.conf contains: root at gw:/# cat /etc/sane.d/dll.conf xerox_mfp root at gw:/# And my xerox_mfp.conf contains: root at gw:/# cat /etc/sane.d/xerox_mfp.conf #xerox_mfp.conf # Samsung SCX-4300 usb 0x04e8 0x342e root at gw:/# scanimage -L, however, fails to identify this device: root at gw:/# SANE_DEBUG_XEROX_MFP=128 SANE_DEBUG_SANEI_USB=4 scanimage -L [sanei_debug] Setting debug level of xerox_mfp to 128. [xerox_mfp] sane_init: Xerox backend (build 12), version != null, authorize != null [sanei_debug] Setting debug level of sanei_usb to 4. [sanei_usb] sanei_usb_init: marking existing devices [sanei_usb] sanei_usb_init: Looking for kernel scanner devices [sanei_usb] sanei_usb_init: Looking for libusb devices [sanei_usb] sanei_usb_init: found libusb device (0x067b/0x2303) interface 0 at libusb:001:007 [sanei_usb] store_device: add dn 0 with libusb:001:007 [sanei_usb] sanei_usb_init: found libusb device (0x04e8/0x342e) interface 0 at libusb:001:006 [sanei_usb] store_device: add dn 1 with libusb:001:006 [xerox_mfp] sane_xerox_mfp_get_devices: 0x7fcb5f60, 0 [sanei_usb] sanei_usb_find_devices: vendor=0x04e8, product=0x342e [xerox_mfp] list_one_device: libusb:001:006 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). root at gw:/# It seems to notice the existence of the device, reporting: [xerox_mfp] list_one_device: libusb:001:006 but it does nothing more than that. Does anyone have suggestions as to what I can try to debug this further? Many thanks Rogan Dawes
