...tiens, c'est curieux, j'ai un retour un poil différent :
~]$ sudo fc-cache -fv
/usr/share/fonts: caching, new cache contents: 6 fonts, 14 dirs
/usr/share/fonts/100dpi: caching, new cache contents: 0 fonts, 0 dirs
/usr/share/fonts/75dpi: caching, new cache contents: 0 fonts, 0 dirs
/usr/share/fonts/OTF: caching, new cache contents: 23 fonts, 0 dirs
/usr/share/fonts/TTF: caching, new cache contents: 193 fonts, 0 dirs
/usr/share/fonts/Type1: caching, new cache contents: 0 fonts, 0 dirs
/usr/share/fonts/cantarell: caching, new cache contents: 5 fonts, 0 dirs
/usr/share/fonts/cyrillic: caching, new cache contents: 0 fonts, 0 dirs
/usr/share/fonts/encodings: caching, new cache contents: 0 fonts, 1 dirs
/usr/share/fonts/encodings/large: caching, new cache contents: 0 fonts, 0 dirs
/usr/share/fonts/gsfonts: caching, new cache contents: 35 fonts, 0 dirs
/usr/share/fonts/mathjax: caching, new cache contents: 0 fonts, 1 dirs
/usr/share/fonts/mathjax/HTML-CSS: caching, new cache contents: 0 fonts, 7 dirs
/usr/share/fonts/mathjax/HTML-CSS/Asana-Math: caching, new cache contents: 0 fonts, 1 dirs
/usr/share/fonts/mathjax/HTML-CSS/Asana-Math/woff: caching, new cache contents: 23 fonts, 0 dirs
/usr/share/fonts/mathjax/HTML-CSS/Gyre-Pagella: caching, new cache contents: 0 fonts, 1 dirs
/usr/share/fonts/mathjax/HTML-CSS/Gyre-Pagella/woff: caching, new cache contents: 23 fonts, 0 dirs
/usr/share/fonts/mathjax/HTML-CSS/Gyre-Termes: caching, new cache contents: 0 fonts, 1 dirs
/usr/share/fonts/mathjax/HTML-CSS/Gyre-Termes/woff: caching, new cache contents: 23 fonts, 0 dirs
/usr/share/fonts/mathjax/HTML-CSS/Latin-Modern: caching, new cache contents: 0 fonts, 1 dirs
/usr/share/fonts/mathjax/HTML-CSS/Latin-Modern/woff: caching, new cache contents: 24 fonts, 0 dirs
/usr/share/fonts/mathjax/HTML-CSS/Neo-Euler: caching, new cache contents: 0 fonts, 1 dirs
/usr/share/fonts/mathjax/HTML-CSS/Neo-Euler/woff: caching, new cache contents: 17 fonts, 0 dirs
/usr/share/fonts/mathjax/HTML-CSS/STIX-Web: caching, new cache contents: 0 fonts, 1 dirs
/usr/share/fonts/mathjax/HTML-CSS/STIX-Web/woff: caching, new cache contents: 55 fonts, 0 dirs
/usr/share/fonts/mathjax/HTML-CSS/TeX: caching, new cache contents: 0 fonts, 1 dirs
/usr/share/fonts/mathjax/HTML-CSS/TeX/woff: caching, new cache contents: 22 fonts, 0 dirs
/usr/share/fonts/misc: caching, new cache contents: 108 fonts, 0 dirs
/usr/share/fonts/ttf-linux-libertine: caching, new cache contents: 26 fonts, 0 dirs
/usr/share/fonts/util: caching, new cache contents: 0 fonts, 0 dirs
/usr/share/fonts/wenquanyi: caching, new cache contents: 0 fonts, 1 dirs
/usr/share/fonts/wenquanyi/wqy-microhei: caching, new cache contents: 2 fonts, 0 dirs
/usr/local/share/fonts: skipping, no such directory
/root/.local/share/fonts: skipping, no such directory
/root/.fonts: skipping, no such directory
/usr/share/fonts/100dpi: skipping, looped directory detected
/usr/share/fonts/75dpi: skipping, looped directory detected
/usr/share/fonts/OTF: skipping, looped directory detected
/usr/share/fonts/TTF: skipping, looped directory detected
/usr/share/fonts/Type1: skipping, looped directory detected
/usr/share/fonts/cantarell: skipping, looped directory detected
/usr/share/fonts/cyrillic: skipping, looped directory detected
/usr/share/fonts/encodings: skipping, looped directory detected
/usr/share/fonts/gsfonts: skipping, looped directory detected
/usr/share/fonts/mathjax: skipping, looped directory detected
/usr/share/fonts/misc: skipping, looped directory detected
/usr/share/fonts/ttf-linux-libertine: skipping, looped directory detected
/usr/share/fonts/util: skipping, looped directory detected
/usr/share/fonts/wenquanyi: skipping, looped directory detected
/usr/share/fonts/encodings/large: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS: skipping, looped directory detected
/usr/share/fonts/wenquanyi/wqy-microhei: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/Asana-Math: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/Gyre-Pagella: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/Gyre-Termes: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/Latin-Modern: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/Neo-Euler: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/STIX-Web: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/TeX: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/Asana-Math/woff: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/Gyre-Pagella/woff: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/Gyre-Termes/woff: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/Latin-Modern/woff: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/Neo-Euler/woff: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/STIX-Web/woff: skipping, looped directory detected
/usr/share/fonts/mathjax/HTML-CSS/TeX/woff: skipping, looped directory detected
/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
En l’occurrence aucun appel de répertoires perso