[usr1106]

"Xft.dpi: 192" in .Xresources is recommended everywhere. However, when the desktop under Xbuntu starts it turns out that this setting has been ignored (or overwritten later). Haven't found out why. Other settings in the same file work as they should.

So this is the standard Xfce desktop, maybe I should try with i3. I use i3 at work, but xfce at home. No exact reason why, maybe it's just good to know more than one systen :)