Hi Jean-Pierre, Thanks for this. I'm using Debian Stretch's own distribution of TexLive which is basically a snapshot from 2017-01-23. The problem occurs with the follow pdf outputs in LyX: LuaTex, ps2pdf, pdflatex.Everything works as expected with XeTex in LyX. I suspect the problem is NOT in LyX because, exporting Tex formats from LyX and then compiling directly, produces to the same results.
I might have to move over to a direct TexLive installation. I wish we would have a proper flatpak (https://flatpak.org) bundle of LyX+TexLive-full for all Linux users. I'll report back if I have some success here. Cheers,Sam On Saturday, 17 February 2018, 5:07, Jean-Pierre Chrétien <jeanpierre.chret...@free.fr> wrote: Le 16/02/2018 à 13:14, Jean-Pierre Chrétien a écrit : > Le 16/02/2018 à 10:29, Sam Lewis a écrit : >> In a beamer frame, two boxes (minipages, drop shadow) are place in columns >> next to each other. Everything works fine, except in the first frame one of >> the boxes including text is always red. > > The box is OK here (lyx-2.3.0rc2, Debian Stretch, TeXLive 2017). > I'm updating TeXLive (beamer has changed), I'll test again when it is over > (528 > files to update). > Same beahviour with updated TeXLive, the color of the X box is OK. What could we check next? the exported .tex file? Attached. -- Jean-Pierre