I had some difficulty getting the DocBook stuff to work on my Debian system. Here's what seems to work for me:
1. Export to DocBook in LyX 2. Change the <article lang="en_US"> in the SGML to have lang="en" instead 3. openjade -c /etc/sgml/catalog -t tex -d /usr/share/sgml/docbook/stylesheet/dsssl/modular/print/docbook.dsl foo.sgml 4. tex \&jadetex foo.tex ...for foo.lyx -> foo.dvi -- Mark
