Actually, it is possible to have X11 autodetect the DPI of the screen. Just run the command:
xdpyinfo | grep resolution
and you will get the correct DPI value for the monitor X is running on. I think that autodetection is a better mechanism than adding a new setting somewhere. I just filed a bug on this in the Gnome bugzilla today, and am going to add that bug to the upstream bug list; if anyone disagrees with that decision, feel free to change it :-)
Actually, it is possible to have X11 autodetect the DPI of the screen. Just run the command:
xdpyinfo | grep resolution
and you will get the correct DPI value for the monitor X is running on. I think that autodetection is a better mechanism than adding a new setting somewhere. I just filed a bug on this in the Gnome bugzilla today, and am going to add that bug to the upstream bug list; if anyone disagrees with that decision, feel free to change it :-)