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 <kitno...@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 <commun...@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 <kitno...@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 <commun...@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 <kitno...@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 <commun...@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 <commun...@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 <kitno...@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"