I have a 4K display, and the correct scaling would be 3x. I have put
Xft.dpi: 300
in .Xresources and
GDK_SCALE=3
GDK_DPI_SCALE=-1
in /etc/environment.
This can scale most applications, but the C++ applications that use gtkmm do not scale. Some apps are Nitrogen and GParted. Using this method, the text scales but not the icons. How do I scale the icons for gtkmm applications?
