> % \setmainfont{TexGyreTermes} > % \setmathfont{Tex Gyre Termes Math}
If you use the correct \setmainfont{TeX Gyre Termes} \setmathfont{TeX Gyre Termes Math} (note the uppercase X in TeX, the spaces, etc) then it works. You can check - as documented in the fontspec manual - with otfinfo -i <FILENAME> and pick the "Preferred Family", in the Math case Preferred family: TeX Gyre Termes Math OSFONTDIR is set to /usr/share/fonts and searched recursively, so the fonts should be found. Furthermore, the TeX Gyre fonts should be linked into /usr/share/texmf/fonts, and also be found via that line. Best Norbert -- PREINING Norbert https://www.preining.info Mercari Inc. + IFMGA Guide + TU Wien + TeX Live GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13