For my Ubuntu I had to delete ~./cache when I couldn't chance the sub-pixel order for my Xfce4 desktop, then everything did work again.
- [arch-general] Subpixels and append mode in Font Config 2.10 Martin Panter
- Re: [arch-general] Subpixels and append mode in Font Co... Ralf Mardorf
- Re: [arch-general] Subpixels and append mode in Fon... Martin Panter