On 10 Jun, Russ Burdick wrote:
>
> ok, i've finally got a bit of time to play with my scanner again and i've
> been doing some work with my Acer Prisma 310S and the latest snapscan
> backend (snapscan-20000514.tar.gz) and sane-1.0.2.
>
> from what i've gone through in the source it seem that this scanner has
> the same id (and supposedly behavior) as the VUEGO310S. this brings me to
> my first question for the list: is there anyone out there using a Vuego
> 310S that has had success with any version of sane+snapscan? if the vuego
> works and the acer doesnt, perhaps they're not the same inside and it'd be
> worthwhile to start thinking about separating the two in the snapscan
> code.
>
> back when kevin was still taking care of snapscan and active on this list
> i had a few conversations with him about trying to get snapscan working
> correctly for the acer 310S. at present everything but the very begining
> of a scan is complete garbage, so he had me try doing small scans,
> specifically < 64K. you can see some example of the output here:
>
> http://www.cs.umn.edu/~wburdick/sane/
>
> the first two are color at different resolutions and the last three are
> greyscale. the final image is of a slightly different area on my test
> image since the top of the first one didnt seem all that interesting. this
> is the one i find most interesting. it looks like the first 'block' is
> clear, then the subsequent 'blocks' get more and more garbled. i should
> also note that the resulting pnms (produced by xscanimage) 'appeared to be
> truncated' according to xv, but the greyscale images were fine. i used xv
> to check the images out and to convert them to the above referenced
> pngs. i did all of the above after 'export SANE_DEUBUG_SNAPSCAN=128' and
> the resulting output is also at the above referenced url.
>
> i thought before jumping into the code too deep i'd see if anyone had any
> thoughts on what i'm seeing. is there something it's doing different on
> the scans after the first one that it shouldnt be? any comments welcome.
>
> Russ
>
I have exactely the same problem with my vuego 310s, I haven't tried the
latest backend yet but I will as soon as I have a litle spare time.
Please keep me posted.
Jouke
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