Hey Marco, I get it—those persistent little dots under your Part One/Part Two headers are super frustrating, especially when the usual navigation symbol commands don’t work. Let’s break down why this is happening and how to fix it:

Why Your Current Commands Aren’t Working #

The commands \setbeamertemplate{navigation symbols}{} and \beamertemplatenavigationsymbolsempty only target the bottom toolbar navigation symbols (like forward/back buttons, slide counters). The dots under your Part sections are part of the dedicated Part page template, which many Beamer themes define separately. That’s why those global commands don’t affect them.

Solution 1: Redefine the Part Page Template #

The most reliable way is to completely override the Part page template to exclude those dots. Add this code to your preamble (before \begin{document}):

\makeatletter
\renewcommand{\@part}[2][]{%
  \ifnum \c@secnumdepth >-2\relax
    \refstepcounter{part}%
    \addcontentsline{toc}{part}{\thepart\hspace{1em}#1}%
  \else
    \addcontentsline{toc}{part}{#1}%
  \fi
  \begingroup
    \centering
    {\usebeamerfont{part name}\usebeamercolor[fg]{part name}Part \thepart\par}
    {\usebeamerfont{part title}\usebeamercolor[fg]{part title}#2\par}
    \vfill % Keep vertical spacing, remove any navigation dot code here
  \endgroup
  \@endpart
}
\makeatother

This code rebuilds the Part page without including any navigation dot elements. It preserves the default Part title styling while stripping out the unwanted dots.

Solution 2: Target Theme-Specific Part Navigation #

If you’re using a theme like Berlin, Madrid, or Singapore (which use sidebar navigation), the dots might be linked to the mini frame template. You can disable mini frames specifically for Part pages by adding this to your preamble:

\AtBeginPart{\setbeamertemplate{mini frame}{}}
\AtEndPart{\setbeamertemplate{mini frame}[default]}

This turns off mini frames (the dots) only when rendering the Part page, then restores them for regular slides.

Note on the TeXStudio "Unrecognised Message" #

That red underline in TeXStudio is just a false positive from its syntax checker—\beamertemplatenavigationsymbolsempty is a valid Beamer command. The checker often struggles with Beamer-specific commands, so you can ignore that warning as long as your code compiles correctly.

Give these methods a try—they should get rid of those stubborn dots for good!

内容的提问来源于stack exchange，提问作者Marco