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 ? 03:14 +1100, Wade Fitzpatrick a ?crit : > > 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 > > > > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20090418/edf9b80f/attachment.htm>
