How do I get the right aspect ratio in xorg?
For the first time I am using xorg without an xorg.conf file. My input devices work OK but my display is distorted. There are quite wide black bars on either side and the image seems stretched in the vertical dimension.
According to xdpyinfo (output attached), my display dimensions are 320x240 mm (1600x1200 pixels). That agrees with my tape measurements of the monitor screen, but the actual illuminated area is more like 280x240 mm. I think I need to put a monitor.conf file in /etc/X11/xorg.conf.d but how do I find out what to put in it?