[sane-devel] scsi works only when debugged epson

[Klaus Dittrich]

SANE-Backends-1.0.13
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SCSI storage controller: LSI Logic / Symbios Logic 53c875 (rev 04)
(Works well with SANE-Backends-1.0.12, cdrecord, DAT-Tape, disks)

The scanner has two interfaces SCSI(attached) and USB(unplugged).

sane-find-scanner -q

found SCSI processor "EPSON Perfection1640 1.06" at /dev/sg2
found USB scanner (vendor=0x067b, product=0x2303) at libusb:003:003

Bug : Scanner found on unused interface too.

Wish: Device independent reporting format,
	  would make writing scanner scripts simpler.

e.g.

Found Scanner "EPSON Perfection1640 1.06" (vendor=0x067b, product=0x2303) \
SCSI epson:/dev/sg2 
Found Scanner "EPSON Perfection1640 1.06" (vendor=0x067b, product=0x2303) \
USB  epson:libusb:003:003

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scanimage -L 

No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).

but

scanimage -d epson:/dev/sg2 --test works, the scanner does something.

scanimage -d epson:/dev/sg2 --resolution 100 
returns	scanimage: sane_start: Error during device I/O

but after a export SANEI_DEBUG_SANEI_SCSI=128

scanimage -d epson:/dev/sg2 --resolution 100 
P4
# SANE data follows
848 1169
... 
works, puts out data.

scanimage -L
device `epson:/dev/sg2' is a Epson Perfection1640 flatbed scanner
now works too.

Seems the bug has to do with debugging.
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Karl-Heinz I saw the fromfeed was alreay fixed in 1.0.13.

--
Regards Klaus