[sane-devel] MP730 driver broken since pixma-0.12.2

[Wade Fitzpatrick]

I have updated my findings at
http://waddles.org/content/sane-canon-mp730-driver

Can someone suggest the next place to start work?

Thanks,
Wade.

2009/4/4 Nicolas Martin <nicolas.martin at freesurf.fr>

> Sorry, posted answer in wrong thread.
>
> As far as I can see in the differences between older versions of the
> pixma standalone driver and today's, concerning usb exchanges for MP730,
> the older drivers did not use events polling whereas newer do with usb
> interrupt reads.
>
> First, did you try to remove the PIXMA_CAP_EVENTS flag for the pixma 730
> declaration (at the botom of file pixma_mp730.c) and see how it
> behaves ?
>
> I will also send you some modified files for the pixma backend to
> investigate why this usb low level error appears.
>
> Nicolas
>
> Le vendredi 03 avril 2009 à 03:14 +1100, Wade Fitzpatrick a écrit :
> > Can you take a look at the logs on
> > http://waddles.org/content/sane-canon-mp730-driver and tell me if you
> > think I'm on the right track with the endpoints?
> >
> > I CBF re-installing Windows, but I did test a successful scan with
> > mp150-0.12.2 followed immediately by a try with pixma-0.15.0 but it
> > failed so I doubt it has anything to do with power-saving modes.
> >
> > Thanks,
> > Wade.
> >
> > 2009/3/21 Nicolas Martin <nicolas.martin at freesurf.fr>
> >         Seems confirmed that a usb low level error happens on first
> >         write
> >         attempt:
> >
> >         [sanei_usb] sanei_usb_write_bulk: trying to write 10 bytes
> >         [sanei_usb] 000 F3 20 00 00 00 00 00 00 0C
> >         00                   . ........
> >         USB error: error submitting URB: Device or resource busy
> >         [sanei_usb] sanei_usb_write_bulk: write failed: Device or
> >         resource busy
> >         USB error: could not clear/halt ep 1: Device or resource busy
> >
> >         [pixma] WARNING:pixma_write(): count(0) != len(10)
> >
> >
> >         I remember having seen this before for someone else, this
> >         happened when
> >         the usb port was going to power saving (generally after a few
> >         seconds)
> >
> >         Could it be the case on system ?
> >
> >         Nicolas
> >
> >
>
>
>
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