[sane-devel] Debugging sane-find-scanner/scanimage

Thu May 31 19:17:41 UTC 2012

Arm can be either.

allan

On Thu, May 31, 2012 at 3:07 PM, Rogan Dawes <rogan at dawes.za.net> wrote:
> On 31/05/2012 17:35, m. allan noah wrote:
>>
>> Is this machine big-endian cpu?
>>
>> allan
>
>
> Hi Allan,
>
> It is ARM, which I believe is Little Endian.
>
> Rogan
>
>
>>
>> On Thu, May 31, 2012 at 11:23 AM, Rogan Dawes<rogan at dawes.za.net>  wrote:
>>>
>>> [Resending due to no responses after more than a week]
>>>
>>> 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
>>>
>>> --
>>> sane-devel mailing list: sane-devel at lists.alioth.debian.org
>>> http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/sane-devel
>>> Unsubscribe: Send mail with subject "unsubscribe your_password"
>>>            to sane-devel-request at lists.alioth.debian.org
>>
>>
>>
>>
>

-- 
"The truth is an offense, but not a sin"