A4 and duplex printing

[Raymond Wan <rwan@kuicr.kyoto-u.ac.jp>]

Hi all,

        I'm using Debian stable and trying to print in A4, duplex mode on 
a network printer.  I've made some progress, but I think I'm missing one 
piece still.  In CUPS (v1.1.23), I've selected "duplex" and my media size 
is A4.

        I have this in a2ps.cfg:

##  Enable duplex printing
Options: -s2

        And this in a2ps-site.cfg:

##  Change libpaper to a4
Options: --medium=a4

        If I print a PS file, it comes out on A4 and duplex mode.  So 
far, so good...

        Now, I try to print the same file with:

lp -d <printer name> -o sides=two-sided-long-edge file.ps

        or even with just

lp file.ps

	It doesn't come out, even though the CUPS interface lists the job 
as being "completed".  It was a dvi file made with "dvips -tA4".  If I 
remove the -tA4, it comes out double-sided, but on letter-size paper 
(There is letter-sized paper in the printer, but it is better not to use 
it since it isn't the standard paper size here, which makes it expensive 
to acquire.)

        As for the Debian FAQ, I can confirm that libpaper1 is installed, 
/etc/papersize says "a4" and just for good measure, I set the PAPERSIZE 
environment variable to "A4".

        lpoptions returns a single line:  "job-sheets=none,none 
_kde-filters=true".

        If anyone has any suggestions on where should I look or what I may 
have done wrong, please let me know.  I've noticed no obvious pattern so 
far and am quite confused about it...

Ray