Why, since today, Bitmaps fonts are used?

Question

My question is similar tho those but different:

• The text in pdf is not smooth
• Why are Bitmap-Fonts used automatically?

Since today, as of question title, my pdf looks bad, because of Bitmap fonts. Until few hours ago I never seen a bitmap font in this paper I'm working on since few months (the first paper I write in LaTex so please be patient).

What happened today: I added a bibliographic entry to a database (managed with JabRef) and after that I had problem building. I tried several thing such as cleaning temporary files and so on. I installed the latest, new version of TeXstudio. I finally removed MiKTeX and reinstalled from a local repository I created few days ago and from where I had reinstalled MiKTex few days ago. This last step finally solved but introduced the problem of Bitmap fonts.

Following the steps of the related question, installing package cm-super and so on apparently solve the issue, but I'm concerned because I neved had to do this and I never had the problem of Bitmap fonts.

From what I understand using cm-super is not without consequences and so, I wish to avoid this workaround to a problem I never had.

This is the most simple document that show the problem.

\documentclass[]{article}
\begin{document}
\section{Test}
This is a test
\end{document}

System: Windows x64

The log file show an error:

pdflatex.exe (file pdftex.map): cannot open font map file] (test.aux) ) Here is how much of TeX's memory you used: 207 strings out of 493634 2132 string characters out of 3142147 52604 words of memory out of 3000000

Answer 1

Run with pdflatex

\documentclass{article}
\pdfmapfile{lm.map}% use only Latin Modern as vectorfont
\usepackage{graphicx}
\begin{document}
    \fontfamily{cmr}\selectfont\scalebox{15}{O} % Computer Modern -- Bitmap
    \fontfamily{lmr}\selectfont\scalebox{15}{O} % Latin Modern    -- Vector
\end{document}

\documentclass{article}
\usepackage[T1]{fontenc}% use always vector fonts if available
\usepackage{graphicx}
\begin{document}
    \fontfamily{cmr}\selectfont\scalebox{15}{O} % Computer Modern -- Bitmap
    \fontfamily{lmr}\selectfont\scalebox{15}{O} % Latin Modern    -- Vector
\end{document}

Using Latin Modern by default:

\documentclass{article}
\usepackage[T1]{fontenc}% use always vector fonts if available
\usepackage{lmodern}
\usepackage{graphicx}
[...]