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

[Andrew Goodbody]

Chances are that rather than interfering with Sane, the proprietary 
software does something that made the scanner work the next time you ran 
Sane after having just run the ScanSnap app.

Andrew

On 07/05/2021 22:12, Media Mouth 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 
>> <mailto: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 
>> <mailto: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 
>>> <mailto: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 
>>> <mailto: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"
>