[sane-devel] HP 7450C USB scanner failure with ADF
Sun, 29 Jun 2003 23:19:37 +0200 (CEST)
On: Wed, 25 Jun 2003 22:52:40 +0200,
Henning Meier-Geinitz <firstname.lastname@example.org> wrote:
> I have to admitt that I'm a bit confused by the backend. It uses USB
> interrupt transfers to get the status of the scanner. However that
> only works with libusb, not the kernel scanner driver. So I don't
> really know why the backend lists "usb /dev/ubs/scanner" in
> avision.conf. Maybe the maintainer can enlighten me :-)
Yes - the scanner Linux driver is not supported. The line in the
avision.conf might only silpped in from my initial tests with the
scanner driver. I'll remove it soon.
> Usually the config files list all devices and device files the backen=
> supports. So it doesn't matter if there are additional ones.
> The backend checks for all USB devices anymway, I don't think the
> entries in avsion.conf are necessary at all.
Yes - the entries are only an example how to add IDs for test reasons
when new scanners are out ...
> > I'll keep trying. I have just done =
> > modprobe scanner vendor=3D0x0001 product=3D0x0002,
> These vendor and product ids are most probably wrong. If the scanner
> driver works at all, try something like this:
> rmmod scanner
> modprobe scanner vendor=3D0x03f0 product=3D0x0801
The scanner driver does not work.
> That doesn't look good. Your scanner doesn't seem to accept any input=
> on any endpoint (bulk in, out and interrupt). =
> I recommend to unplug/replug your scanner before any test. Otherwise
> it may be confuded by eralier tests.
It needs to be powerer off to loose all it's state.
> Is loaded but doesn't know about your scanner.
Thanks for the answering the questions Henning - when I'm as always
out of time ;-)
- ROCK Linux stable release maintainer
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