ConTeXt is working fine,and I am pretty sure that OSFONTDIR is set correctly
I have recently run 
mtxrun --script fonts --reload
and
context --generate


I am able to see/use fonts in the /usr/share/fonts/opentype and /usr/share/fonts/truetype

I can see/use some of the fonts in the /usr/share/fonts/X11/ directory:

mtxrun --script fonts --list --all --pattern=Symbol*
symbol                   symbol                   /usr/share/fonts/X11/Type1/Symbol.afm
symbolbold               symbol                   /usr/share/fonts/X11/Type1/Symbol.afm

ls -l /usr/share/fonts/X11/Type1/Symbol.*
/usr/share/fonts/X11/Type1/Symbol.afm -> ../../type1/mathml/Symbol.afm
/usr/share/fonts/X11/Type1/Symbol.pfb -> ../../type1/mathml/Symbol.pfb


But I can't see with mtxrun (or use in documents) many of the fonts in this directory:

mtxrun --script fonts --list --all --pattern=Dorian*
<no output>

ls -l /usr/share/fonts/X11/Type1/Dorian*
/usr/share/fonts/X11/Type1/DorianCLM-Book.afm
/usr/share/fonts/X11/Type1/DorianCLM-Book.pfa


I note that the fonts that I can  use appear to be symbolic links to a different directory.  




Thank you very much for advice.


Best,
Michael


I'm using 
mtx-context     | ConTeXt Process Management 0.60
mtx-context     |
mtx-context     | main context file: /opt/context/tex/texmf-context/tex/context/base/context.mkiv
mtx-context     | current version: 2014.04.28 23:24
on linux (ubuntu 14.04)




--
Michael Ash, Chair, Department of Economics
Professor of Economics and Public Policy         
University of Massachusetts Amherst
Amherst, MA 01003
Email mash@econs.umass.edu
Tel +1-413-545-2590 Twitter https://twitter.com/michaelaoash