Hi, I found both the reason and the solution. Reason is - virtualbox sets a weird dpi settings when virtualbox driver isn't installed. Qemu handles that part better. Apparantly gtk tries to override any weird dpi settings and falls back to 96x96, but qt doesn't. Solution - I have added and edited a few xorg related files. First i put ~/.xprofile with the following content - xrandr --dpi 96 Then it is sourced by display managers. But to start x without display manager, i added the following lines...
Fonts are too big inside virtualbox