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I am compiling a simple Beamer document in two almost identical Linux boxes (Manjaro KDE 2017.3). They both have the same full TeXLive 2017 installation, properly updated. (They have the very same programmes installed, but they have somewhat different hardware: on has an Intel 430 graphics card, while the other has a Radeon card.)

The MWE is as follows:

\documentclass{beamer}
\usetheme{Madrid}
\begin{document}
\begin{frame}
  \titlepage
\end{frame}
\end{document}

However, one of the computers produces a wrongly rendered shadows, as you can see here:

enter image description here

while the other does it correctly:

enter image description here

Notice that it is not a problem of the PDF application I'm using, since the bad PDF output is displayed badly in both PCs.

Any ideas as to what can be occurring here?

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  • 5
    I saw a message that says there was a bug in one of the Beamer files and an updated version was produced yesterday. Wait until tomorrow or the next day and update you distribution. – Herb Schulz Sep 5 '17 at 0:06
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This had been a bug in beamer version v3.42 and 3.43, reported here: https://github.com/josephwright/beamer/issues/412

In the development version it has been fixed with https://github.com/josephwright/beamer/commit/dae6a138a5e427a5f58a0fe58ba7fced88d27ac7

(as a temporary workaround until the next beamer update, place https://raw.githubusercontent.com/josephwright/beamer/master/base/beamerbasecolor.sty in your working directory)

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