[sane-devel] Epson 3490

[Bjorn Solberg]

Oliver Schwartz writes:

> Hi,
>> The CVS snapshot I downloaded for 20050815 didn't contain that
>> patch. And the CVS version doesn't work for me now (whether I make
>> that modification or not), I alternately get messages like
>> 
>> scanimage: open of device snapscan:libusb:001:003 failed: Error
>> during device I/O
>> 
>> and
>> 
>> scanimage: no SANE devices found

> Can you send me a debug log? Run 
> export SANE_DEBUG_SNAPSCAN=255 
> then
> scanimage 1>/dev/null 2>debug.log

(Sent in private email.)

>> > Yes. The parameter is called "Threshold" in lineart mode. It's
>> > available in the Standard Options window in xsane or as option
>> > --threshold in scanimage.
>> 
>> I get (with the 20050815 version)
>> 
>> scanimage: attempted to set inactive option threshold

> It's supposed to be active in lineart mode only. Running 
> scanimage --mode=Lineart --threshold=70
> works fine here (although on another scanner model).

Ah, I had the --threshold argument before the --mode argument - I didn't
realize there was a required order and didn't test any permutations.
Thank you for clearing that up for me.

Bjorn.