[sane-devel] PIXMA TS8300 Series not working

[Thierry HUCHARD]

Le 2020-10-07 17:38, Yoann Le Montagner a écrit :
> Hi,
> 
> Here is the logs obtained respectively with SANE_DEBUG_ESCL=255
> scanimage -d 'escl:http://127.0.0.1:60000' and SANE_DEBUG_ESCL=255
> scanimage -d 'airscan:e0:Canon TS8300 series (USB)'.
> 
> I've tested the new set-up with ippusbxd uninstalled, replaced by
> ipp-usb, + airscan, + libsane 1.0.31. It seems to work fine, scans are
> OK, 1200dpi resolution works... Still, I've noticed something strange
> with the 'escl:http://127.0.0.1:60000' driver: when I start the PC,
> the driver is listed by `scanimage -L`, but after a while, when I'm
> using the scanner, it disappears. The exact workflow:
> 
> 1) Start the PC
> 2) scanimage -L -> OK, both drivers are here:
> 
> yoann at yoann-desktop:~$ scanimage -L
> Entity: line 1: parser error : Start tag expected, '<' not found
> �
> ^
> device `escl:http://127.0.0.1:60000' is a Canon TS8300 series (USB)
> flatbed scanner
> device `airscan:e0:Canon TS8300 series (USB)' is a eSCL Canon TS8300
> series (USB) eSCL network scanner
> 
> 3) Start gimp, start XSane, select one of the two drivers.
> 4) Preview, then acquisition.
> 5) scanimage -L -> only airscan is listed now:
> 
> yoann at yoann-desktop:~$ scanimage -L
> device `airscan:e0:Canon TS8300 series (USB)' is a eSCL Canon TS8300
> series (USB) eSCL network scanner
> 
> 6) Close gimp, restart gimp, start XSane => I'm no-longer prompt to
> select one of the two drivers.
> 
> -> This behavior seems weird to me, but as long as the airscan driver
> is there, this is a non-blocking issue.
> 
> Thanks for your help.
> 
> Regards,
> 
> Yoann
> 
> 
> Le 05/10/2020 à 23:42, Thierry HUCHARD a écrit :
>> Le 2020-10-05 23:14, Yoann Le Montagner a écrit :
>>> Hi,
>>> 
>>> I've installed both ipp-usb and sane-airscan, following the
>>> instructions on https://github.com/alexpevzner/sane-airscan, and
>>> uninstalled ippusbxd. I've sent a first mail to the list reporting
>>> that this manipulation didn't fixed the problem ('scanimage -L' was
>>> still returning "No scanner were identified..."). But I've retried 
>>> the
>>> same test after a while, and now it appears to work:
>>> 
>>> yoann at yoann-desktop:~$ scanimage -L
>>> Entity: line 1: parser error : Start tag expected, '<' not found
>>> �
>>> ^
>> there is an error here, can you give me the log?
>> $ SANE_DEBUG_ESCL=255 scanimage -d 'escl:http://127.0.0.1:60000'
>> Thank's
>>> device `escl:http://127.0.0.1:60000' is a Canon TS8300 series (USB)
>>> flatbed scanner
>>> device `airscan:e0:Canon TS8300 series (USB)' is a eSCL Canon TS8300
>>> series (USB) eSCL network scanner
>>> 
>>> I've tried to use the scan with scanimage, with device 
>>> "escl:http:..."
>>> on one hand, and "airscan:e0:..." on the other hand. Both seem to
>>> work. XSane seems to work too. I will do some more tests tomorrow to
>>> confirm that. I don't whether one "device" should be preferred on the
>>> other ?
>>> 
Thanks for the log!
It's a bug that is present on the backend using avahi in sane, I'll look 
at it because Alexander has solved the problem!

>>> Please find attached the output of 'SANE_DEBUG_DLL=255 scanimage -L'
>>> in which appears the warning regarding the parser error.
>>> 
>>> Thanks for your help.
>>> 
>>> Regards,
>>> 
>>> Yoann
>>> 
>>> 
>>> Le 05/10/2020 à 22:49, Alexander Pevzner a écrit :
>>>> Hi Thierry,
>>>> 
>>>> On 10/5/20 10:46 PM, Thierry HUCHARD wrote:
>>>>> Hi Alexander,
>>>>> Can you help with the installation of ipp-usb ?
>>>> 
>>>> It should be very easy. Just download appropriate package (depending 
>>>> on your distro) from 
>>>> https://download.opensuse.org/repositories/home:/pzz/ and install 
>>>> it.
>>>> 
>>>> It is marked as "conflicting" with ippusbxd, so package manager 
>>>> should request you to uninstall ippusbxd or even do it 
>>>> automatically.
>>>>