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

[MediaMouth]

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"