Description of Problem:
When one is using ADF (automatic document feeder) and multiple
pages to scan then xsane attempts to stick them into a single
file; i.e. there is no provision to use --batch flag, possibly
with a format specification, in an underlying 'scanimage'.
You need to pick a filename like 'image-001.pnm' and set 'Step' non-zero. Are
you doing that?
Actually it turns out that putting a name like 'output-0', or 'ouput-1',
and picking up an extension from a menu, will also do and a counter will
be expandend automatically to its width which you can set somewhere else,
but this was not really obvious to find.
Moreover when you are using a feeder it is not enough to pick up ADF as
your source but one has also set "modus" in "Enhancements" to ADF (default
is "none") or pile of pages will be not scanned without a manual
End of batch scanning is signalled on a screen with a pop-up alert which
annouces "I/O Error". Technically correct as there seems to be only one
exceptional condition and this is "I/O Error", even you just run out of pages
to scan, but scares pants off with "uninitiated". Sigh!
I never claimed it was easy to use..