Biblatex missing characters in Libertinus

[Wolfgang Engelmann]

Am 02.12.21 um 07:51 schrieb Wolfgang Engelmann:
> 
> 
> Am 01.12.21 um 20:18 schrieb Herbert Voss:
>>
>>
>> Am 01.12.21 um 18:36 schrieb Wolfgang Engelmann:
>>>
>>>
>>>> \usepackage{libertinus}
>>>> \setmathfont{STIX2Math.otf}
>>>>
>>>>
>>> I inserted your
>>> \usepackage{libertinus}
>>> \setmathfont{STIX2Math.otf}
>>>
>>> (I had before
>>> \usepackage{libertinus-otf}
>>> \setmonofont[Scale=MatchLowercase,FakeStretch=0.88,Ligatures=ResetAll]{AnonymousPro} 
>>>
>>> >the second one in one line, i.e. [...]{AnonymousPro}
>>
>> that is also ok, libertinus is a wrapper for libertinus-otf and 
>> libertinus-type1
>>
>>
>>
>>>
>>> which gives an error message
>>> ! Package fontspec Error: The font "STIX2Math" cannot be found.
>>>
>>
>> it is  part of a full texlive installation.  You can try the file name:
>>
>> \setmathfont{STIXTwoMath-Regular.otf}
>>
>> it it doesn't help, then try to install STIXTwo:
>> https://ctan.org/tex-archive/fonts/stix2-otf?lang=de
>>
>> Maybe that Ubuntu has an own package for that.
>>
>> Herbert
>> Thanks, Herbert
> 
> I do have the sticks2 fonts, as shown by
> 
> /usr/local/texlive/2021/texmf-dist/fonts$ find -iname 'stix2*'
> 
> May be, I have to set a PATH to it? ow?
> 
> Wolfgang

I put

  PATH=/usr/local/texlive/2021/bin/x86_64-linux:$PATH
in /etc/environment with sudo

The file was empty before. I rebootet and started my lyx file again, but 
get again

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

Wolfgang