[Xy-pic] Dotted arrows and dvips

[R.P.I. Lewis]

If I do:

\documentclass{article}
\usepackage[dvips,arrow,matrix]{xy}
\begin{document}
\xymatrix{A\ar@{.>}[r] & B}
\end{document}

and run (LaTeX and) dvips -o, the resulting .ps does not seem to have a
dotted arrow (previewing in Gnome-gv).  But if i omit the dvips option
I get the expected dots.

Am I supposed to have specified any extra options to dvips to get the dots?


I am using Debian potato which came with Xy-pic 3.7.

Thanks for any info!