LyX/TeX problem: can't find classes

Anthony Campbell ac at
Wed Sep 16 10:17:36 UTC 2015

On 16 Sep 2015, Will Parsons wrote:
> At some point fairly recently (I'm not sure the exact circumstances),
> my LyX installation can't produce PDF files anymore because (almost)
> all document classes are marked unavailable.  Googling has been no
> help - the common recommendations of running (from LyX) "Tools =>
> Reconfigure" and (from the command line) "fmtutil-sys --all" have not
> solved the problem.
> The document that I am currenlty working on uses the "article" class,
> and under /usr/local/share/texmf-dist/tex/latex/base there is a file
> "article.cls" (among other *.cls files).  I'm at a loss.  Can anyone
> shed light on what is wrong?

Do you have the tex-formats package installed (as well as
texlive-texmf)? I had a similar problem to yours when getting LyX to
edit my Beamer files, even though beamer.cls seemed to be present. You
need tex-formats to be able to use pdflatex.

Anthony Campbell

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