Hello, Concerning the bulk timeouts seen with the avision backend amongst others here a little bit more info. It is a follow up of my earlier report in
http://lists.alioth.debian.org/pipermail/sane-devel/2004-June/011182.html First: with SANE_DEBUG_SANEI_USB=255 some more info is given when the timeout occurs: (this is mostly after 1 or 2 successful bulk transfers) [sanei_usb] sanei_usb_read_bulk: trying to read 22656 bytes USB error: error reading from bulk endpoint 0x83: Invalid or incomplete multibyte or wide character [sanei_usb] sanei_usb_read_bulk: read failed: Invalid or incomplete multibyte or wide character USB error: could not clear/halt ep 131: Protocol error I found the "USB error" originating in libusb, but I can't find where the "Invalid or incomplete .." message comes from. So I can't see whether it maybe is significant. Second: after "modprobe uhci_hcd debug=2" (or 3) NO extra information is put into /var/log/kern.log Finally, is there anything else that I could do or test? I was hoping to make a smaller testcase than the test.c program in sane-backends/frontend Greetings, Sietse
