Multicolumn spacing issue with moderncv

Question

Just trying to have 2 columns spaced a bit. I use a minipage to do it, and it seems I have some space left. For example, I can add words to my right title, and it's still good with columns ratio 0.55/0.45. But if I use column ratio 0.6/0.4, I got a linebreak is the section header of the right column.

I know it is not clear so here are some screenshots:

1. ratio 0.55/0.45 image1
2. ratio 0.6/0.4 image2

and here is the code

\begin{minipage}[t]{0.6\textwidth}
\section{Formation}
\cventry{2002 -- 2008}{Diplôme d'ingénieur en informatique}{}{}{EPITA}{Spécialité Multimédia et Technologies de l'Information}
\cventry{2000 -- 2002}{Baccalauréat Scientifique}{}{}{}{Spécialité Mathématiques}
\end{minipage}
%second column
\begin{minipage}[t]{0.4\textwidth}
\section{Langues}
\cvlanguage{Anglais}{Courant}{}
\cvitem{Allemand}{Scolaire}{}
\cvitem{Japonais}{Notions}{}
\end{minipage}

Please help me to space out these columns, thanks!

Edit: here is a sample of the page so people can try it!

% Template : http://blog.madrzejewski.com/creer-cv-elegant-latex-moderncv/

\documentclass[11pt,a4paper]{moderncv}
\moderncvtheme[blue]{classic}
\usepackage[utf8]{inputenc}
\usepackage[top=1cm, bottom=0.5cm, left=1cm, right=1cm]{geometry}
% Largeur de la colonne pour les dates
\setlength{\hintscolumnwidth}{2.8cm}

\firstname{xxx}
\familyname{XXX}
\title{Ingénieur de développement logiciel senior}
\address{xxx}{XXX}
\email{[email protected]}
\social[linkedin]{xxx}
\mobile{xxx} 
\extrainfo{xxx}

\begin{document}
\maketitle

% first column
\begin{minipage}[t]{0.7\textwidth}
\section{Formation}
\cventry{2002 -- 2008}{Diplôme d'ingénieur en informatique}{}{}{EPITA}   {Spécialité Multimédia et Technologies de l'Information}
\cventry{2000 -- 2002}{Baccalauréat Scientifique}{}{}{}{Spécialité Mathématiques}
\end{minipage}
%second column
\begin{minipage}[t]{0.5\textwidth}
\section{Langues}
\cvlanguage{Anglais}{Courant}{}
\cvitem{Allemand}{Scolaire}{}
\cvitem{Japonais}{Notions}{}
\end{minipage}
\end{document}

Answer 1

moderncv is not really set up for two-column curriclum vitaes.

A section heading is constructed of 2 boxes and the separator, setting width of the surrounding minipage will lead to breaking the line in the in the sectiontitle. We can avoid that by issuing \nolinebreak at the appropriate places in the defintion of section.

\documentclass[11pt,a4paper]{moderncv}
\moderncvtheme[blue]{classic}
\usepackage[utf8]{inputenc}
\usepackage[top=1cm, bottom=0.5cm, left=1cm, right=1cm,showframe]{geometry}
% Largeur de la colonne pour les dates

\firstname{xxx}
\familyname{XXX}
\title{Ingénieur de développement logiciel senior}
\address{xxx}{XXX}
\email{[email protected]}
\social[linkedin]{xxx}
\mobile{xxx} 
\extrainfo{xxx}

\setlength{\hintscolumnwidth}{.15\textwidth}
\makeatletter
\RenewDocumentCommand{\section}{sm}{%
  \par\addvspace{2.5ex}%
  \phantomsection{}% reset the anchor for hyperrefs
  \addcontentsline{toc}{section}{#2}%
  \parbox[t]{\hintscolumnwidth}{\strut\raggedleft\raisebox{\baseletterheight}{\color{color1}\rule{\hintscolumnwidth}{0.95ex}}}\nolinebreak%
  \hspace{\separatorcolumnwidth}\nolinebreak%
  \parbox[t]{\maincolumnwidth}{\strut\sectionstyle{#2}}%
  \par\nobreak\addvspace{1ex}\@afterheading}% to avoid a pagebreak after the heading
  \makeatother

\begin{document}
\maketitle

% first column
\fbox{%
\begin{minipage}[t]{0.65\textwidth}
    \section{Formation}
    \cventry{2002 -- 2008}{Diplôme d'ingénieur en informatique}{}{}{EPITA} {Spécialité Multimédia et Technologies de l'Information}
    \cventry{2000 -- 2002}{Baccalauréat Scientifique}{}{}{}{Spécialité Mathématiques}
\end{minipage}}\hfill
%second column
\fbox{%
\begin{minipage}[t]{.35\textwidth}
    \section{Langues}
    \cvlanguage{Anglais}{Courant}{}
    \cvitem{Allemand}{Scolaire}{}
    \cvitem{Japonais}{Notions}{}
\end{minipage}}
\end{document}
\documentclass{moderncv}
\usepackage[utf8]{inputenc} 
\moderncvstyle{banking}     
\moderncvcolor{blue}
\firstname{shay}
\lastname{shay}
\setlength{\textwidth}{15cm}
\begin{document}
\makecvtitle
\begin{minipage}[t]{0.6\textwidth}
    \section{Formation}
    \cventry{2002 -- 2008}{Diplôme d'ingénieur en
    informatique}{}{}{EPITA}{Spécialité Multimédia et
    Technologies de l'Information}
    \cventry{2000 -- 2002}{Baccalauréat
    Scientifique}{}{}{}{Spécialité Mathématiques}
\end{minipage}%
%second column
\begin{minipage}[t]{0.4\textwidth}
    \section{Langues}
    \cvlanguage{Anglais}{Courant}{}
    \cvitem{Allemand}{Scolaire}{}
    \cvitem{Japonais}{Notions}{}
\end{minipage}

\end{document}

Here a minimal example that shows what's going on.

\documentclass{standalone}
\usepackage{showframe}
\begin{document}
\fbox{\begin{minipage}{.5\linewidth}
    \rule{.4\linewidth}{.9\baselineskip}\rule{.6\linewidth}{.9\baselineskip}\par
    \rule{.4\linewidth}{.9\baselineskip} \rule{.6\linewidth}{.9\baselineskip}\par
    \rule{.4\linewidth}{.9\baselineskip}\nolinebreak \rule{.6\linewidth}{.9\baselineskip}\par
\end{minipage}}
\end{document}