I have an ASUS ENGT440/DI1GD5 video adapter which has three output ports: D-Sub (HD-15), DVI and HDMI. I am using both the D-Sub and DVI ports, but my main monitor is connected to the DVI output. Everything works fine except for which monitor is designated the console during boot.
The video adapter seems to prefer the D-Sub output for the console. When both the VGA and DVI monitors are connected, then the VGA monitor always becomes the console which displays the motherboard logo, POST information and booting progress. When only the DVI monitor is connected, then it becomes the console as desired.
How do I make the video adapter always use the DVI output (instead of the VGA port) for the console while booting?