[sane-devel] Canon DR-2580C only low resolutions

[meier richy]

Hi allan,

i have the same Problem with the DR-2580C. I compiled and installed latest
sane-backends from (git)source but still the same problems. If there isn't a
solution yet, I'd like to help/test. Thanks for your help .

Richard


m. allan noah-3 wrote
> ah- and between those two versions, there were very few changes. In
> particular, there was a change to the 2580 code to deal with its
> padding of the back side of the image. Are you able to recompile
> sane-backends from source? If so, perhaps we can try a test.
> 
> allan
> 
> On Fri, May 24, 2013 at 12:15 PM, Carl Davis <

> carl@

> > wrote:
>> Hopefully this is what you are seeking.
>>
>> 1.0.22 works
>> 1.0.23 fails
>>
>>
>> On Fri, May 24, 2013 at 10:50 AM, m. allan noah <

> kitno455@

> > wrote:
>>>
>>> Yes- i think there is some problem with the calibration code on these
>>> machines, at higher resolutions the calibration is done differently
>>> than in lower resolutions. Perhaps the old version of the code did
>>> different calibration. How about telling which version of
>>> sane-backends is in use on your two systems?
>>>
>>> allan
>>>
>>> On Fri, May 24, 2013 at 11:05 AM, Carl Davis <

> carl@

> > wrote:
>>> > Hello,
>>> >
>>> > I have a Canon DR-2580C. If I scan at anything above a –resolution of
>>> > 240 my
>>> > attempted scan fails with:
>>> >
>>> > "scanimage: open of device canon_dr:libusb:001:012 failed: Invalid
>>> > argument"
>>> >
>>> > This problem does not exist on 12.04(1.0.22-7ubuntu1) but does on
>>> 12.10
>>> > and
>>> > 13.04 (1.0.23-0ubuntu1). I have run:
>>> >
>>> > "SANE_DEBUG_CANON_DR=30 scanimage --resolution=300 > 2580-1.pnm
>>> > 2>2580-13.04.log"
>>> >
>>> > and attached the log file to this email. I have also run the same
>>> > command on
>>> > 12.04 (which succeeds) but it is 8MB bzipped so I won't attach it to
>>> > list
>>> > mail unless requested.
>>> >
>>> >
>>> > Thanks,
>>> >
>>> > Carl
>>> >
>>> >
>>> >
>>> > --
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>>>
>>>
>>>
>>> --
>>> "The truth is an offense, but not a sin"
>>
>>
> 
> 
> 
> -- 
> "The truth is an offense, but not a sin"
> 
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