Quote Originally Posted by wysota View Post
The problem seems to be with your system settings which are picked up by the application. Hard to say anything more detailed though. Qt respects FontConfig so you might start looking at your settings there.
Actually, it appears there are some vast issues with Qt and different Linux desktop versions. The slightest difference in versions, at least on KDE desktop means the application will not get the correct fonts. Currently developing on Ubuntu 12.04.3 LTS and qt-everywhere 4.8.3 built from source on this system. Does not get correct font. Another box running the exact same VM image can install the Qt dev packages from the distro repositories, build the exact same application from source and have it bring in the correct fonts.