In my free physics book, the cls file contains a line to define fmy as standard sans-serif font:
which worked well for many years. Today I updated from TexLive2017 to TeXLive 2020.
The result is that dvips bombs - no .ps file is produced:
kpathsea: Running mktexpk --mfmode ljfour --bdpi 600 --mag 0+360/600 --dpi 360 fmyr8r mktexpk: don't know how to create bitmap font for fmyr8r. mktexpk: perhaps fmyr8r is missing from the map file. kpathsea: Appending font creation commands to missfont.log. dvips: Font fmyr8r not found; using cmr10 </usr/local/texlive/2020/texmf-dist/fonts/pk/ljfour/public/cm/dpi600/cmr10.pk> dvips: ! invalid char 150 from font fmyr8r
Ok, this is a font map issue. Since I have no idea any more (after 10 years) where the map for the fonts is, how can I find out?
All the .fd files are in my home directory. The commands
sudo -H mktexlsr sudo -H updmap-sys
had no effect. The problem persists. The page http://tug.org/fonts/fontinstall.html did not help.