It’s very easy to use sax or sax2 tool for configuring screen resolution, monitor dimension, etc for X session.
Or you may modify the xorg.conf file for this purpose.
But, it’s too bothersome to see a warning message about your “high resolution” at the center of monitor if you are using a KVM-over-IP switch like Raritan or Avocent. Also you are in text mode…
So, do you know a tool for modifying the resolution of your console (tty1, tty2, ..) resolution.