[Bug 261891] [NEW PORT] graphics/epsonscan2: scanner engine supporting many Seiko/Epson scanners

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261891

--- Comment #6 from J.R. Oldroyd <fbsd@opal.com> ---
Okay on the devfs suggestion and the extra dependency.

As for the core dump, my own scanner uses the ESCI2 interface code while this
one is using the ESCI code, which explains why I do not experience this core
dump.

The core dump is due to an assertion failure due to Resolution being 0.  The
value for Resolution should have been obtained from the device.  Please turn on
the execution trace log (do that by creating the empty directory /tmp/epson)
and run the command again.  You should see the command going to the device and
the values of the data being read back.  If not, you may have to add some
additional debug output.

I have sent email with additional details of the call sequence here.

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