lmodern software package provides scalable PostScript and OpenType fonts based on Computer Modern, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install lmodern
lmodern is installed in your system.
Make ensure the lmodern package were installed using the commands given below,
$ sudo dpkg-query -l | grep lmodern *
You will get with lmodern package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | TeX |
| Package | lmodern |
| Version | 2.004.4-3 |
| Description | scalable PostScript and OpenType fonts based on Computer Modern |
| Sub Section | TeX |