[sane-devel] Canon PIXMA MX890

[Rolf Bensch]

Hi Henry,

The backend has an ADF paper empty bug. You can try to debug this issue,
if you like.

The first step could be to sniff the complete usb protocol from a 5mm x
5mm ADF scan on a windows machine with usbsnoop
(http://benoit.papillault.free.fr/usbsnoop/). This program is old and
runs with xp only, but we have a parser for the log files (spike4.pl).

Cheers,
Rolf


Am 05.12.2012 00:57, schrieb Henry Ptasinski:
> Rolf,
> 
> The ADF partially works.  I've been able to get simplex scans
> occasionally.  Duplex scans so far have only yielded the front page, and
> some errors such as:
> 
> ...
> [pixma] bjnp_write_bulk(0, bufferptr, 0x10 = 16)
> [pixma] bjnp_set_timeout to 20000
> [pixma] bjnp_read_bulk(0, bufferptr, 0x200 = 512)
> [pixma] bjnp_set_timeout to 20000
> [pixma] bjnp_write_bulk(0, bufferptr, 0x10 = 16)
> [pixma] bjnp_set_timeout to 20000
> [pixma] bjnp_read_bulk(0, bufferptr, 0x200 = 512)
> [pixma] bjnp_set_timeout to 20000
> [pixma] bjnp_write_bulk(0, bufferptr, 0x10 = 16)
> [pixma] bjnp_set_timeout to 20000
> [pixma] bjnp_read_bulk(0, bufferptr, 0x200 = 512)
> [pixma] bjnp_set_timeout to 20000
> [pixma] bjnp_write_bulk(0, bufferptr, 0x10 = 16)
> [pixma] bjnp_set_timeout to 20000
> [pixma] bjnp_read_bulk(0, bufferptr, 0x200 = 512)
> [pixma] WARNING:image size mismatches
> [pixma]     1678578 expected (877 lines) but 1556082 received (813 lines)
> [pixma] pixma_read_image(): completed (underrun detected)
> [pixma] sanei_bjnp_deactivate (0)
> [pixma] Reader task terminated
> [pixma] pixma_close(): Canon PIXMA MX890 Series
> [pixma] sanei_bjnp_close(0):
> [pixma] sanei_bjnp_deactivate (0)
> 
> 
> When this happens, the display on the printer continues to say "Scanning
> document", and I'm not able to cancel out of the scan.
> 
> My recent tests were via network.  I'll attach the scanner via USB and
> try to collect some debug info.
> 
> ---
> Henry Ptasinski
> henry at logout.com
> 
>