[sane-devel] Bug#597922: Additional Scanner Logs

[Olaf Meeuwissen]

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On 2010年12月06日 09:44, Olaf Meeuwissen wrote:
> [...]  The backend does not
> do the right thing protocol-wise and I suggested a fix in a previous
> comment.  Once that fix is added, you will still be out of luck because
> your scans will be aborted by the backend as soon as it sees a cancel
> request (the last byte of the image data block matches 0x10).  I have no
> clue as to why it sends that information.  If all is okay you should be
> seeing 0x00 there.  As I mentioned before, I have no information on the
> 0x02 part of that byte here at hand but I'll see if I can dig something up.

I found an old command spec in my private archive for the Perfection
1650 but that only documents the 0xc0 bits of the error code.  Looks
like not even the 0x10 bit ought to be set ever.

One option would be to mask the undocumented bits but that very likely
would have to be done on a per scanner basis as the 0xf0 bits are known
and documented to be supported by some scanners.  Yuck!

Hope this helps,
- -- 
Olaf Meeuwissen, LPIC-2           FLOSS Engineer -- AVASYS CORPORATION
FSF Associate Member #1962               Help support software freedom
                 http://www.fsf.org/jf?referrer=1962
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