[sane-devel] Canon Lide 220 not working over 1200dpi

[Povilas Kanapickas]

It could be that the code has bitrot since it was written as there were
no tests. I noticed that many scanners didn't live up to the
expectations set in the "supported scanners" web page.

Povilas

On 9/15/19 11:24 AM, mfoolb bloofm wrote:
> That is actually a bit frustrating considering I chose this model based
> on the 'fully supported from 75 to 4800 dpi' info found on the sane
> supported devices page (consider updating that).
> I don't know how to help for the GL chip datasheet info.
> 
> Thanks.
> 
> Il giorno sab 14 set 2019 alle ore 19:42 Jeroen Van den Keybus
> <jeroen.vandenkeybus at gmail.com <mailto:jeroen.vandenkeybus at gmail.com>>
> ha scritto:
> 
>     Indeed 1200 and above does not work. If anyone has a datasheet of
>     the GL chip used, I may consider looking into it. 
> 
>     It's a problem with the scan head motor that is not moving and
>     software waiting forever until it does.
> 
> 
>     On Sat, Sep 14, 2019, 4:39 PM Mikhail Novosyolov via sane-devel
>     <sane-devel at alioth-lists.debian.net
>     <mailto:sane-devel at alioth-lists.debian.net>> wrote:
> 
>         14.09.2019 14:01, mfoolb bloofm пишет:
>>         Hello,
>>
>>         I've just bought a Canon Lide 220 scanner but I can't make it
>>         work at 2400 or 4800 dpi.
>>         The scanner is supported 100% from 75 to 4800 dpi as of
>>         http://www.sane-project.org/sane-mfgs.html#Z-CANON.
>>         I'm using Ubuntu 19.04 and sane 1.0.27.
>>         Tried using simple-scan and genesys library on Gimp (2.10.8),
>>         if resolution is 2400 simple-scan freezes same thing on GIMP
>>         from 1200dpi and up.
>>         I need 2400 or 4800 dpi scan of little areas (2cmx2cm) of
>>         documents.
>>         Can anyone help me?
>>         Thanks.
>>         -- 
>>
>>         Marco.
> 
>         I think I heard something about 2400 DPI on Canon LiDE, but
>         don't remember what.
> 
>         Did you try installing latest sane git snapshot from PPA
>         https://launchpad.net/~rolfbensch/+archive/ubuntu/sane-git ?
> 
> 
> 
> -- 
> 
> Marco.