[sane-devel] Raspbian Jessie - scanbd scripting issue

[RainerF]

I tried to configure scanbd for an EPSON Perfection 1670 on a Raspbian Jessie
system. First I installed scanbd form the Raspbian package repository, but
this version seems to be compiled for sane backends support only, which
don't recognise button pressed events on my scanner. Then I compiled scanbd
from  source
<http://downloads.sourceforge.net/project/scanbd/releases/scanbd-1.4.2.tgz>  
with the old scanbutton backends support. That's working, but there are two
issues:
1) only two buttons invoke script execution
The scanner has four buttons, but currently scripts are only executed for
button 2 (copy) and button 3(email). I would like to use at least the scan
button (= button 4) as well. Within the syslog I can seethat also for button
1 and button 4 there is a reaction, just no script will be executed. In
scanbd.confI noticed two kind of checks for button pressed event handling,
one, where a string change is evaluated, the other, where an integer value
changes.

Might this be misconfigured?
How can I check, which string has been send from the scanbuttond backend?

Remark: the button numbering seems to be in reverse order, for button 3 is
labeled with a printer icon, button 2 with a letter icon.   
2) scanimage reports 'no scan device'
    When I executeI always get the information that no scan device was
found. I would have expected something likewhich was the output, when scanbd
was installed from the Raspbian package repository. I thought, scanimage
would request a scan via sane port 6566, observed by scanbm, which would
then forward the request to the 'real' saned.
Am I wrong with this assumption?

I attached my configuration and a part of the syslog file.

Thanks in advance for any kind of assistance,which might help to solve the
above mentined issues.

Cheers, Rainer.

-------------------------------------------------------
configuration files
/usr/local/etc/scanbd/scanbd.conf (only changes from default):
sudo cp scanbd_dbus.conf /etc/dbus-1/system.d/
	this file is copied "as is" from the integration folder
sudo nano /lib/systemd/system/scanbd.service (only changes from default):
syslog (excerpt):




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