[sane-devel] Epson (Stylus) CX 5400 confusion

[Olaf Meeuwissen]

Johannes Meixner <jsmeix at suse.de> writes:

> Hello,
>
> According to the model decription files there are two backends
> which support an Epson (Stylus) CX 5400
> epson for "Epson CX-5400" with USB-IDs 0x04b8:0x0808 and 0x04b8:0x0801
> and
> epkowa for "Epson Stylus CX5400" with USB-ID 0x04b8:0x0801
>
> I assume the "Epson CX-5400" and the "Epson Stylus CX5400"
> are the same so that there seems to be a USB ID confusion and
> a model name confusion for this model?

Yes, these would be the same.
It appears that the epkowa backend has the product ID wrong.

  Stylus CX5100/CX5200     0x0801
  Stylus CX5300/CX5400     0x0808

On a related note, the CX6600 is listed with two product IDS, but it
appears that the following is correct:

  Stylus CX6300/CX6400     0x0805
  Stylus CX6500/CX6600     0x0808

The Stylus CX5100/CX5200 corresponds to the Japanese CC-600PX and all
the other models do not have a corresponding Japanese version.

We'll put fixing this on the list the next iscan release.

> For details background information see
> https://bugzilla.novell.com/show_bug.cgi?id=229250
>
> At least for the user who sent us the above bug report,
> the epson backend does not work for his scanner 0x04b8:0x0808
> (SANE debug outputs are attached to the bug report) but epkowa
> works after adding 0x04b8:0x0808 to epkowa.conf.
>
> Perhaps there is some subtle difference so that the epson backend
> works only for0x04b8:0x0801 but not for 0x04b8:0x0808?

The difference is not that subtle and has been mentioned on the list
before, IIRC.  Yes, here it is:

  http://lists.alioth.debian.org/pipermail/sane-devel/2006-December/018296.html

The epson backend maintainer was Cc:d on that mail.

There is also a Debian bug that mentions it:

  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=399119

The right thing to do is to remove the block from the code of the
epson backend.

Hope this helps,
-- 
Olaf Meeuwissen                          EPSON AVASYS Corporation, SE1
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