[sane-devel] scanimage -L crashes with HP ScanJet 4100c

[Peter Kirchgessner]

Hello,
I assume that there is a problem with the communication with that
scanner. The backend tries to identify the scanner by inquiring various
settings. And if the backend does not get the expected answers from it
(Escape-sequences with defined arguments) it will not make use of that
scanner. I am using a HP ScanJet 6350 with USB (even on a 64 bit
machine) since years and it makes no problem. And the hp-backend uses
the same USB-software-interface for all the scanners it supports.
Maybe the ScanJet 4100 is a little bit too slow in answering and it does
not deliver the expected answers in time. I will see if I can find a
workaround.

Peter

m. allan noah schrieb:
> well, i think peter might have more clue than anyone else-
> 
> peter?
> 
> allan
> 
> On 2/9/08, Bill Moseley <moseley at hank.org> wrote:
>> On Sat, Feb 09, 2008 at 01:32:19PM -0500, m. allan noah wrote:
>>> does it work without the hub? how about scrapping xsane or the gimp
>>> for a minute, and just use scanimage to try and grab data....
>> Sorry if I was not clear.  I was trying w/o the hub.  Here'
>> with the scanner connected directly to the computer:
>>
>> moseley at bumby2:~$ scanimage -L
>> device `hp:libusb:005:002' is a Hewlett-Packard ScanJet 4100C flatbed scanner
>>
>> moseley at bumby2:~$ scanimage >image.pnm
>> scanimage: no SANE devices found
>>
>>
>> Hum -- if I try multiple times it sometimes will make the scanner
>> work.  Like one in 20 tries.
>>
>>
>> --
>> Bill Moseley
>> moseley at hank.org
>>
>>
> 
> 

-- 
Peter Kirchgessner
http://www.kirchgessner.net
mailto:peter at kirchgessner.net