[sane-devel] Issues with backend for Pixma TR4520

[Jack Sanders]

Thanks for the reply, Thierry.

1 - Distribution is Raspbian 10 (Debian-based, run on Raspberry Pi, ARM
architecture)
2 - My sane backend is version 1.0.27

On Mon, Jul 19, 2021 at 11:27 PM Thierry Huchard <thierry at ordissimo.com>
wrote:

> In order to help you more, we need to provide more information:
> 1 - Your distribution and its version?
> 2 - the version of sane installed
> # scanimage --version
>
> Le 20 juillet 2021 07:40:16 GMT+02:00, Thierry Huchard <
> thierry at ordissimo.com> a écrit :
>>
>> Hi,
>> The pixma backend only supports usb.
>> Your device is supported by the escl and airscan backend.
>> You need to update your sane version or install airscan.
>>
>> Thierry
>>
>> Le 20 juillet 2021 05:18:55 GMT+02:00, Jack Sanders <
>> jjacksanders at gmail.com> a écrit :
>>>
>>> I'm a major beginner with networks and all of this, and the way to get
>>> this scanner to function is beyond me.
>>>
>>> This is the error readout after attempting to add the device directly to
>>> the pixma backend config file. It's the only reaction I've gotten trying to
>>> connect over wifi. Without listing the device in the config file, both
>>> sane-find-scanner and scanimage -L run (both run as root) show nothing.
>>> Error message below:
>>>
>>> [bjnp] udp_command: ERROR - no data received (timeout = 5000)
>>> [bjnp] bjnp_init_device_structure: Cannot read mac address, skipping
>>> this scanner
>>> [bjnp] udp_command: ERROR - no data received (timeout = 5000)
>>> [bjnp] add_scanner: ERROR - Cannot read scanner make & model: bjnp://
>>> 192.168.68.110:8612/timeout=5000
>>>
>>> Meanwhile, when connected by usb I get this readout in response to
>>> running sane-find-scanner, which lists codes that correspond to what's
>>> listed on the backend supported device charts for this printer/scanner
>>> model. Can't parse what the "Pipe error" bit means. Feedback message below:
>>>
>>> found USB scanner (vendor=0x04a9 [Canon], product=0x1854 [TR4500
>>> series]) at libusb:001:005
>>> could not fetch string descriptor: Pipe error
>>>   # Your USB scanner was (probably) detected. It may or may not be
>>> supported by
>>>   # SANE. Try scanimage -L and read the backend's manpage.
>>>
>>> Any guidance on how to get it working would be greatly appreciated.
>>>
>>> Thank you!
>>>
>>
> --
> Envoyé de mon appareil Android avec Courriel K-9 Mail. Veuillez excuser ma
> brièveté.
>
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