[sane-devel] scanimage -L detects no scanners / sane-find-scanner does -- on MacOS

[Media Mouth]

RE
> In general, you would not have both the factory software and sane on the machine at the same time.

Agreed. For that particular scanner / machine I'm not permitted to remove the existing Fujitsu software, but it does seem to be the very thing that's causing `scanimage -L` to fail to see it.

I just tested the same printer (different machine, same model) on a Mac without the Fujitsu software, and it recognizes just fine, repeatedly when connected via USB, so I think the culprit is the Fujitsu software.

Thanks for your help.

Trying to move on to connecting via WiFi, will send in a separate thread.

Thanks again.



> On May 7, 2021, at 5:35 PM, m. allan noah <kitno455 at gmail.com> wrote:
> 
> I mean currently running and talking to the scanner. Perhaps something
> like monitoring for button presses. In general, you would not have
> both the factory software and sane on the machine at the same time.
> 
> On Fri, May 7, 2021 at 7:26 PM MediaMouth <communque at gmail.com> wrote:
>> 
>> Control, meaning 'currently scanning' or meaning it has run, therefore made some kind of a settings change, such that even when not launched retains "control"
>> 
>>> On May 7, 2021, at 16:23, m. allan noah <kitno455 at gmail.com> wrote:
>>> 
>>> The proprietary software does not use sane, and if it currently has
>>> control of the scanner, sane will not be able to work.
>>> 
>>> allan
>>> 
>>>> On Fri, May 7, 2021 at 5:12 PM Media Mouth <communque at gmail.com> wrote:
>>>> 
>>>> Well noting yet.  Any reason to think that using the proprietary software that comes with a Fujitsu scanner "ScanSnap.app" might do something that interferes with SANE.  (I'm suspect SANE is their underlying engine)
>>>> 
>>>> We are and have been able to scan using ScanSnap, and for a brief moment yesterday we were also able to run `scanimage` and save a .pnm
>>>> 
>>>> On May 7, 2021, at 12:05 PM, m. allan noah <kitno455 at gmail.com> wrote:
>>>> 
>>>> Unknown- look for OSX system logs that might include USB related errors.
>>>> 
>>>> allan
>>>> 
>>>> On Fri, May 7, 2021 at 2:09 PM Media Mouth <communque at gmail.com> wrote:
>>>> 
>>>> 
>>>> So we're apparently back to the original question...
>>>> 
>>>> "Re: [sane-devel] scanimage -L detects no scanners / sane-find-scanner does -- on MacOS"
>>>> 
>>>> `sane-find-scanner` returns `found USB scanner (vendor=0x04c5 [Fujitsu], product=0x132b [ScanSnap iX500]) at libusb:000:002`
>>>> and
>>>> `scanimage -L` returns `No scanners were identified. If you were expecting something different` etc.
>>>> 
>>>> It was after your request for the stdout of  `SANE_DEBUG_FUJITSU=50 SANE_DEBUG_SANEI_CONFIG=10 scanimage -L`
>>>> that it suddenly started working, so I wondered if by some magic that was waking something up, but running it again made not difference this go around.
>>>> 
>>>> Any ideas?
>>>> 
>>>> 
>>>> On May 7, 2021, at 6:26 AM, MediaMouth <communque at gmail.com> wrote:
>>>> 
>>>> It did ... and then it didn't.  Right after successfully scanning a page, subsequent attempts, using the same command, failed with error "invalid argument".
>>>> 
>>>> On May 7, 2021, at 05:14, m. allan noah <kitno455 at gmail.com> wrote:
>>>> 
>>>> "device `fujitsu:ScanSnap iX500:330189' is a FUJITSU ScanSnap iX500 scanner"
>>>> 
>>>> looks like it works?
>>>> 
>>>> 
>>>> 
>>>> 
>>>> --
>>>> "well, I stand up next to a mountain- and I chop it down with the edge
>>>> of my hand"
>>>> 
>>>> 
>>> 
>>> 
>>> --
>>> "well, I stand up next to a mountain- and I chop it down with the edge
>>> of my hand"
> 
> 
> 
> -- 
> "well, I stand up next to a mountain- and I chop it down with the edge
> of my hand"