[sane-devel] sane-find-scanner vs. scanimage --list-devices?

[Peter Kirchgessner]

Hi Steven,

please have a look if you have another hp.conf at /usr/local/etc/sane.d.

You can also try an

export SANE_DEBUG_HP=17

and run

scanimage -L

to see what happens to the hp-backend. Send the generated listing back
to me.

--Peter

Steven Lembark wrote:
> 
> The finderizer locates the scanner (an HP6100C) nicely enough,
> scanimage -L doesn't. Same effect as me and su. Checking
> "/dev/scanner" or "/dev/scsi/host2/bus0/target1/lun0/generic"
> gives the same result (see below). The hp.config lists the
> correct device, no help.
> 
> System is a heavily hacked RH-7.1 system w/ sane installed
> into /opt/sane/1.06. Gimp is installed in /opt/gimp/1.2.2.
> Both of their include/lib files are available in /opt/lib
> and /opt/include; /opt/lib is the first entry in /etc/ld.so.conf.
> 
> The Sane and HP FAQ's seem to imply that anything the finderizer
> can locate whould be found identically by scanimage --list-devices.
> 
> Checking the /proc system, it finds the device and the generic
> driver has a matching string (see below). The HP FAQ suggests
> trying the '-d hp:/dev/blah' method, which gives me invalid
> argument.
> 
> In order to reset the equipment I've removed the scsi driver
> (I use a Tekram for the drives, BusLogic for external equipment),
> power-cycled all of they toys, waited for them to settle out and
> then reinstalled the driver.
> 
>     root at dizzy:bin # ./sane-config --prefix
>     /opt/sane/1.0.6/
> 
>     root at dizzy:bin # ./sane-config --cflags
>     -I/opt/sane/1.0.6//include
> 
>     root at dizzy:bin # ./sane-config --ldflags
>     -L/opt/sane/1.0.6//lib -Wl,-rpath,/opt/sane/1.0.6//lib
> 
>     root at dizzy:bin # ./sane-config --libs
>     -lsane -lnsl -lm  -ljpeg
> 
>     root at dizzy:bin # ./sane-config --version
>     1.0.6
> 
>     root at dizzy:bin # cat /proc/scsi/scsi
>     Attached devices:
>     <snip>
>     Host: scsi2 Channel: 00 Id: 01 Lun: 00
>       Vendor: HP       Model: C2520A           Rev: 3644
>       Type:   Processor                        ANSI SCSI revision: 02
>     <snip>
> 
>     root at dizzy:bin # cat /proc/scsi/sg/device_strs
>     <snip>
>     HP              C2520A                  3644
>     <snip>
> 
>     root at dizzy:bin # cat /etc/sane.d/hp.conf <- soft link to
>     /opt/sane/etc/sane.d scsi HP
>     /dev/scanner
> 
>     root at dizzy:bin # ./sane-find-scanner
> 
>     <snip>
> 
>     sane-find-scanner: found SCSI processor "HP C2520A 3644" at device
>     /dev/scanner sane-find-scanner: found SCSI processor "HP C2520A 3644"
>     at device /dev/sg2
> 
>     root at dizzy:bin # ./scanimage --list-devices
> 
>     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).
> 
>     root at dizzy:bin # ./scanimage -d hp:/dev/scanner > /tmp/x
> 
>     scanimage: open of device hp:/dev/scanner failed: Invalid argument
> 
> None of the FAQ/HOWTO/README files I've gone through so far
> mentions how to deal with this case, or where the differences
> in how the two go about it effect the outcome (and there didn't
> seem to be any comments in the source describing this particular
> item). Any suggestions for where to look next?
> 
> Note: the FAQ suggested checking man sane_scsi, but this doesn't
> show up anywhere in the file under /opt/sane/1.06/man.
> 
> thanx.
> 
> --
> Steven Lembark                               2930 W. Palmer
> Workhorse Computing                       Chicago, IL 60647
>                                             +1 800 762 1582
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-- 
Peter Kirchgessner
http://www.kirchgessner.net
mailto:peter at kirchgessner.net
(alternate e-mail: pkirchgessner at t-online.de)