[sane-devel] Epson scaner/epkowa, SANE and 16 bit scaning

Olaf Meeuwissen olaf.meeuwissen at avasys.jp
Mon Nov 7 23:43:10 UTC 2011

mmm <michalus at gmail.com> writes:

> Hi,


> I am using Epson v500 scaner with epkowa driver.
> iscan 2.27.1-4
> iscan-data 1.11.0-1iscan-plugin-gt-x770 2.1.1-1
> Driver is working. I am able to scan with XSane/Sane, iscan or Vuescan.
> Vuescan scans images with 8 and 16 bit depth. But whenever I choose 16
> bit depth on "epkowa config panel" in XSane/iscan program is crashing.

Please submit a bug report at


> I try check logs - but can't find nothing interesting.
> I've found some old posts
> at:http://lists.alioth.debian.org/pipermail/sane-devel/2008-June/022224.htmlwhich
> describing some problems with 16 bit depth on some Epson scaner.
> Can somebody confirm that it still doesn't work? Or maybe somebody
> using it without problems. I need feedback.

As stated in that mail 16-bit support in the epkowa backend is pretty
much untested because iscan doesn't need it.  For scanners that need a
non-free binary plugin it's tested even less.  Seeing that iscan doesn't
need the 16-bit support, a likely "fix" for your crashes is to simply
disable the 16-bit choice for the V500 :-(

> I'd like to use Negfix script:https://sites.google.com/site/negfix/so
> I don't need most features of Vuescan and its Pro license (for "raw
> scaning").

Sorry this doesn't help,
Olaf Meeuwissen, LPIC-2           FLOSS Engineer -- AVASYS CORPORATION
FSF Associate Member #1962               Help support software freedom

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