# Beamerposter missing header with title

I am struggling to create a poster presentation with beamerposter. What I am simply trying to do is to reproduce the examples in the github page; one of which is this one:

  \documentclass[final]{beamer} % beamer 3.10: do NOT use option hyperref={pdfpagelabels=false} !
%\documentclass[final,hyperref={pdfpagelabels=false}]{beamer} % beamer 3.07: get rid of beamer warnings
\mode<presentation> {  %% check http://www-i6.informatik.rwth-aachen.de/~dreuw/latexbeamerposter.php for examples
}
\usepackage[english]{babel}
\usepackage[latin1]{inputenc}
\usepackage{amsmath,amsthm, amssymb, latexsym}
%\usepackage{times}\usefonttheme{professionalfonts}  % times is obsolete
\usefonttheme[onlymath]{serif}
\boldmath
\usepackage[orientation=portrait,size=a0,scale=1.4,debug]{beamerposter}                       % e.g. for DIN-A0 poster
%\usepackage[orientation=portrait,size=a1,scale=1.4,grid,debug]{beamerposter}                  % e.g. for DIN-A1 poster, with optional grid and debug output
%\usepackage[size=custom,width=200,height=120,scale=2,debug]{beamerposter}                     % e.g. for custom size poster
%\usepackage[orientation=portrait,size=a0,scale=1.0,printer=rwth-glossy-uv.df]{beamerposter}   % e.g. for DIN-A0 poster with rwth-glossy-uv printer check
% ...
%
\title[Fancy Posters]{Making Really Fancy Posters with \LaTeX}
\author[Dreuw \& Deselaers]{Philippe Dreuw and Thomas Deselaers}
\institute[RWTH Aachen University]{Human Language Technology and Pattern Recognition,RWTH Aachen University}
\date{Jul. 31th, 2007}
\begin{document}
\begin{frame}{}
\vfill
\begin{block}{\large Fontsizes}
\centering
{\tiny tiny}\par
{\scriptsize scriptsize}\par
{\footnotesize footnotesize}\par
{\normalsize normalsize}\par
{\large large}\par
{\Large Large}\par
{\LARGE LARGE}\par
{\veryHuge veryHuge}\par
{\VeryHuge VeryHuge}\par
{\VERYHuge VERYHuge}\par
\end{block}
\vfill
\end{frame}
\end{document}


Across all the examples that I saw, there is no need to do a classical \maketitle, it shall be incorporated into the beamer template how to render the title in the headline. However I am not able to see any headline title!

This is what I get after compiling with pdflatex:

What am I missing?

The standard beamer themes are set up for presentations rather than posters and so it shouldn't be a surprise that they look inappropriate. The headline is in fact functioning correctly - add \section{Foo}\subsection{Bar} before the frame and you can see this appear in the section title but in normal-sized text which looks tiny on a poster.

Indeed this is even mentioned in a comment on the code you've given %% you should define your own theme e.g. for big headlines using your own logos

You might like to take a look at (or use directly) some of the themes the developer provides for beamerposter to get an idea of what is needed to customise a standard theme https://github.com/deselaers/latex-beamerposter

The below is a simple redefinition of headline to work with the Berlin theme in a manner suitable for beamerposter something similar may be necessary for the footline, alternatively you can use one of the themes from https://github.com/deselaers/latex-beamerposter as a more readily hackable solution

\documentclass[final]{beamer}
\mode<presentation> {
\usetheme{Berlin}
}
\usepackage[orientation=portrait,size=a0,scale=1.4]{beamerposter}
\title[Fancy Posters]{Making Really Fancy Posters with \LaTeX}
\author[Dreuw \& Deselaers]{Philippe Dreuw and Thomas Deselaers}
\institute[RWTH Aachen University]{Human Language Technology and Pattern Recognition,RWTH Aachen University}
\date{Jul. 31th, 2007}

\end{beamercolorbox}
\centering
\vskip2ex
\vskip2ex
\end{beamercolorbox}
\end{beamercolorbox}
\centering
\vskip2ex
\vskip2ex
\end{beamercolorbox}
\end{beamercolorbox}
}
\begin{document}
\begin{frame}{}
\vfill
\begin{block}{\large Fontsizes}
\centering
{\tiny tiny}\par
{\scriptsize scriptsize}\par
{\footnotesize footnotesize}\par
{\normalsize normalsize}\par
{\large large}\par
{\Large Large}\par
{\LARGE LARGE}\par
{\veryHuge veryHuge}\par
{\VeryHuge VeryHuge}\par
{\VERYHuge VERYHuge}\par
\end{block}
\vfill
\end{frame}
\end{document}