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

[Jeroen Van den Keybus]

Povilas,


As I understand it, that code has never been changed over the last years.
Most probably these features have never worked. I tried going back as far
as I could, and the issues remained. That is not bitrot.

It is possible that a different chip worked fine, and that it was assumed
that this code would also work for other Genesys Logic chips.

The only way forward is getting a data sheet.


J.


Op di 17 sep. 2019 om 17:35 schreef Povilas Kanapickas <povilas at radix.lt>:

> 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.
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://alioth-lists.debian.net/pipermail/sane-devel/attachments/20190917/5adb5332/attachment.html>