On 14/09/2020 15:29, Ralph Little wrote:
Hi,
On 2020-09-14 6:49 a.m., Charles Lindsey wrote:
I am using Ubuntu Bionic LTS, and Ubuntu says its version is
0.999-5ubuntu2.
Ubuntu Focal LTS (which I believe uses 1.0.31) says its version is
0.999-8ubuntu2, and that may be closer to what you are using. I could
easily download the source and compile either of those. Looking at the
output of "nm -nD `which xsane`", it would seem that it calls
sane_read (or maybe sane_start) to actually set a scan in progress.
Well we can establish what versions of the backends that xsane is using
by looking at the diag output.
xsane should be using exactly the same backends as scanimage.
I have cracked it; well, sort of.
Still using my old 0.999-5ubuntu2 version of xsane.
Clearly, the preview uses a low resolution scan. So I tried doing a full scan at
various resolutions.
50 dpi - banding seen
75 dpi - banding seen
100 dpi - banding seen
150 dpi - no banding
I an still planning to download and compile the newer 0.999-8ubuntu2 version of
xsane (but not today). In the meantime, I suggest you try the same experiment on
your Epson 1260.
Using Simple Scan, I got no banding at either 75 dpi or 150 dpi, so I still
think it is an xsane problem.
--
Charles H. Lindsey ---------At my New Home, still doing my own thing------
Tel: +44 161 488 1845 Web: http://www.cs.man.ac.uk/~chl
Email: [email protected] Snail-mail: Apt 40, SK8 5BF, U.K.
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