[sane-devel] Problem with HP Scanjet 7450c - Avision backend

[Wayne Sherman]

I installed sane on my Gentoo box to setup a scan server, but I am 
experiencing the same problems as some others.  XSane and scanimage both 
detect the scanner, but they crash when trying to preview or scan.

uname -a
Linux wopr 2.6.23-gentoo-r3 #4 SMP Fri Dec 28 20:36:48 PST 2007 i686 AMD 
Athlon(tm) 64 X2 Dual Core Processor 3800+ AuthenticAMD GNU/Linux

sane-backends-1.0.19-r2
   (see http://gentoo-portage.com/media-gfx/sane-backends/ChangeLog)

scanimage --help:

Model: scanjet 7400c
Firmware: 0.8S
Manufacturing date: 65535-0-0
First scan date: 32896-0-0
Flatbed scans: 8
Pad scans: 33685504
ADF simplex scans: 213712896]

List of available devices:
     avision:libusb:004:004

NOTE:  The firmware version is 0.8S after using the scanner in Windows, 
but after a power cycle, the firmware goes back to version 0.8A.

# export SANE_DEBUG_AVISION=7
# scanimage -l 5mm -t 5mm -x 15mm -y 15mm 2> scanner-name.log > 
scanner-name.png

kern.log:  Mar 26 09:15:15 wopr scanimage[13586]: segfault at 08074000 
eip b7f98774 esp bf889920 error 4

Log File: 
https://sites.google.com/a/systemdesignworks.com/test/Home/scanner-hp7450c.log

When I uncommented the line "option disable-calibration" in 
avision.conf, then it doesn't segfault, and I got this log:

https://sites.google.com/a/systemdesignworks.com/test/Home/scanner-hp7450c-disable-calibration.log

It actually scanned one time, but it still has problems.  For example in 
XSane, the preview scan gives a black image and I get time out errors, 
and long pauses.  Here are another two logs of my attempts:

https://sites.google.com/a/systemdesignworks.com/test/Home/scanner-hp7450c-afterapowercycle.log
https://sites.google.com/a/systemdesignworks.com/test/Home/scanner-hp7450c-afterusingonWindows.log

Here are reports of similar symptoms on HP scanners with the Avision 
backend:

xsane and scanimage crashes:
http://lists.alioth.debian.org/pipermail/sane-devel/2009-March/024182.html
http://lists.alioth.debian.org/pipermail/sane-devel/2009-March/024187.html

Segmentation Fault
http://lists.alioth.debian.org/pipermail/sane-devel/2009-March/024147.html


Thanks,

Wayne