Re: Menu fonts

[David L. Johnson]

I recommend compiling LyX 2.2.0 with Qt 5.6. The latter knows about
high-dpi monitors, and it uses the system settings to select the
appropriate magnification.
And what "system settings" allow me to change the fontsize globally?  I 
use xfce4, and have also been looking for that.
Have you tried
        Right click on the menu panel and select Huge icons?
That changes the size of the icons, not the text of menus.