You can enable them as follows:
cd /etc/fonts/conf.d/ sudo rm -rf 70-no-bitmaps.conf && sudo ln -s ../conf.avail/70-yes-bitmaps.conf . sudo dpkg-reconfigure fontconfig
[1] https://wiki.ubuntu.com/Fonts#Enabling_Bitmapped_Fonts
You can enable them as follows:
The Ubuntu wiki[1] has information about how you can be more specific and only enable a selection of fonts, if you desire.[1] https://wiki.ubuntu.com/Fonts#Enabling_Bitmapped_Fonts