ddcxinfo -hsync > $TMP/hsync
ddcxinfo -vsync > $TMP/vsync
vert=`cat $TMP/vsync`
horiz=`cat $TMP/hsync`
if [ $vert = "0-0" ]; then
  vert="40-90"
fi
if [ $horiz = "0-0" ]; then
  horiz="31.5-64"
fi