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<TITLE>sane-devel: Re: Problems with Acer ScanPrisa 640S</TITLE>
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<H1>Re: Problems with Acer ScanPrisa 640S</H1>
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<STRONG>From:</STRONG> Steve Underwood (<A HREF="mailto:steveu@coppice.org?Subject=Re:%20Problems%20with%20Acer%20ScanPrisa%20640S&In-Reply-To=&lt;39EFB7B5.CA3382BD@coppice.org&gt;"><EM>steveu@coppice.org</EM></A>)<BR>
<STRONG>Date:</STRONG> Thu Oct 19 2000 - 20:10:45 PDT
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Sebastien Sable wrote:
<BR>
<P><EM>&gt; Hi,
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; Steve Underwood &lt;<A HREF="mailto:steveu@coppice.org?Subject=Re:%20Problems%20with%20Acer%20ScanPrisa%20640S&In-Reply-To=&lt;39EFB7B5.CA3382BD@coppice.org&gt;">steveu@coppice.org</A>&gt; writes:
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; &gt; Is that really helpful? The 1.0.1 backend is very different from the 1.0.3 -
</EM><BR>
<EM>&gt; &gt; a major rewrite, in fact. The 1.0.3 backend is clearly the future (it wasn't
</EM><BR>
<EM>&gt; &gt; rewritten without good reason), so why not concentrate on improving that, and
</EM><BR>
<EM>&gt; &gt; leave the old versions behind. Multiple versions not only dissipate
</EM><BR>
<EM>&gt; &gt; development effort, but encouraging people to try them will just reduce
</EM><BR>
<EM>&gt; &gt; feedback on the most interesting version - the latest.
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; I'm not sure about it but, from what I read, at least those models:
</EM><BR>
<EM>&gt; Acer 300f, Acer 320U, snapscan 310s, Agfa 1212u and Agfa 1236s used to
</EM><BR>
<EM>&gt; work well with sane-1.0.1 but they block while scanning with
</EM><BR>
<EM>&gt; sane-1.0.3 in high resolution.
</EM><BR>
<EM>&gt; If we could find the small bug there, I'm sure everybody would be
</EM><BR>
<EM>&gt; happy to use the latest bleeding edge technology.
</EM><BR>
<P>I think the key problem with those models has recently been fixed by Lawrence
<BR>
Glaister. I'm sure other issues persist, but as far as I know the 1.0.3 backend +
<BR>
his changes works pretty well.
<BR>
<P>I updated the backend to merge the colours properly in May. Since then I have had
<BR>
little feedback. Lawrence is the first person to fully work through anything from
<BR>
&quot;I have a problem&quot; to &quot;I have a cure&quot; since then. People need some serious coaxing
<BR>
to follow through on their problems. Multiple software versions don't help. The
<BR>
large number of models supported by this backend, and the
<BR>
informationally-retentive attitude of the two main vendors, means that effective
<BR>
user feedback is the only way to debug.
<BR>
<P>Perhaps this is why the original author walked away, and dumped the project?
<BR>
<P>Regards,
<BR>
Steve
<BR>
<P><P><P><PRE>
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