This may be irrelevant... Since some time ago, "fc-match fixed" in fontconfig no longer matches 9x15-ISO8859-1.pcf.gz: "Misc Fixed" "Regular". I have written the following in my ~/.config/fontconfig/fonts.conf.
<alias>
<family>Fixed</family>
<prefer></prefer>
<accept>
<family>Misc Fixed</family>
</accept>
<default>
<family>monospace</family>
</default>
</alias>
