Biblatex missing characters in Libertinus

[Wolfgang Engelmann]

Am 02.12.21 um 10:18 schrieb Herbert Voss:
> Wolfgang Engelmann schrieb:
>>
>>
>>>>>>
>>>>>>> \usepackage{libertinus}
>>>>>>> \setmathfont{STIX2Math.otf}
>>>>>>>
>>> luaotfload | db : Reload initiated (formats: otf,ttf,ttc); reason: File
>>> not foun
>>> d: "STIX2Math.otf".
>>> ! Package fontspec Error: The font "STIX2Math" cannot be found.
>>>
>>> I tried also /etc/environment.d
>>> but I do not understand its functioning and stopped it
> 
> for font files in official directories you do not need
> any path setting. Try the attaches minimal example. It works
> under Ubuntu and TeXLive
> 
> Herbert
> 
Thanks for the test file. I ran it, but get

/tmp/mozilla_wolfgang0/stix2.lyx is from a newer version of LyX and the 
lyx2lyx script failed to convert it.

my LyX version is 2.3.6
and
sudo apt-get install lyx
tells me for my version:
lyx ist schon die neueste Version (2.3.6-1).
0 aktualisiert, 0 neu installiert, 0 zu entfernen und 0 nicht aktualisiert.

Strange.

Wolfgang