The Design and Implementation of laffer1

Getting widescreen displays in X11 to work is a pain.  With most displays, you must create a modeline.  Here is an example for my Westinghouse 19 inch LCD. 

Section "Monitor"
        #DisplaySize      410   260     # mm
        Identifier   "Monitor0"
        VendorName   "WDE"
        ModelName    "L1975NW"
 ### Comment all HorizSync and VertSync values to use DDC:
        HorizSync    30.0 - 82.0
        VertRefresh  56.0 - 76.0
        Option      "DPMS"
        ModeLine    "1440x900" 106.5 1440 1520 1672 1904 900 903 909 934
EndSection

Then just add the 1440x900 mode for your screen.  Now I googled this problem and everyone offered similar examples.  What do all those numbers mean on the ModeLine?  Well these numbers come from your xorg.0.log.  In BSD, this is /var/log/xorg.0.log.  Look for a line listing "Supported Additonal Video Mode"  It will list a clock and various h_ and v_ lines. 

ModeLine <name> <clock> <4 horizontal timings> <4 vertical timings>

This will work on MidnightBSD with xorg 6.9.