The following picture shows the options dialog of kdvi.
These options specify the fonts which kdvi will use for rendering. By carefully optimizing the settings here it is possible to improve on the display. However, unless you are an expert in MetaFont and know what you are doing, it is absolutely no good idea to change these options. Save values are "600" and "ljfour" for good quality or "300" and "cx" for medium quality and faster display.
Check this if you want kdvi to call the MetaFont program in the likely case that kdvi wants to display documents which use fonts which are not yet readily made. You most certainly want to set this option.
If this is not empty, it points to a list of directories to be searched for pk-fonts, e.g.
/var/lib/texmf/fonts/pk/ljfour/:/some/other/place |
/var/lib/texmf/fonts// |