Plan9port comes with a different set of Postscript fonts than Plan 9 does. If your man page is trying to use the Plan 9 fonts, it may not be able to find them.
See $PLAN9/man/fonts for incantations (case luxi and case dejavu) that should be viewable with a stock plan9port. Since 9 man adds these automatically, you will have to put them at the top of your file for autoroff to work out. The corresponding fonts are in subdirectories of $PLAN9/postscript/font. Russ
