XeLaTeX, fc-list, fc-cache problem

Question

I'm using XeLaTeX which is based on Linux. The problem is about fc-cache and fc-list. The problem is the following:

1) I noticed that in the folder /usr/share/texmf-dist/fonts/opentype/public/lm I have a lot of .otf fonts. 2) I know that its name is Latin Modern Roman, but doing fc-list | grep Latin I cannot find anything; 3) So I update cache doing fc-cache -fv /usr/share/texmf-dist/fonts/opentype/public/lm, here it's the result

/usr/share/texmf-dist/fonts/opentype/public/lm: caching, new cache contents: 72 fonts, 0 dirs
/var/cache/fontconfig: cleaning cache directory
/root/.cache/fontconfig: not cleaning non-existent cache directory
/root/.fontconfig: not cleaning non-existent cache directory

fc-cache: succeeded

4) however doing again fc-list | grep Latin I don't get anything. What is the problem? How can I have that font in my cache?

Answer 1

Perhaps I found the solution: it must be added the following file

 <?xml version='1.0'?>
 <!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
 <fontconfig>
 <dir>/usr/share/texmf-dist/fonts/opentype</dir>
 </fontconfig>

named 09-texlive.conf in /etc/fonts/conf.d. Of course 09 con be substituted by any number from 00 to 08.