by brainier » Mon Dec 12, 2005 2:34 pm
The external card would need to be dual headed and support cloning across the outputs.
The laptop screen is Display 1, and one of the external outputs is Display 2 (cloned onto the second external output).
With a dual-headed video card, and a standard single output video card on a desktop PC, our church has the following.
* Single headed card = Display 1 = management (set as primary display in Windows XP - BIOS, boot logo and login all appear on this screen as well)
* Dual headed card (one VGA and one DVI output) are cloned at 1024x768 resolution, which is what the external LCD monitor (DVI - Display 2) and projector (VGA) work at. Had to return a larger res monitor as the cloned image would stretch on this screen and look bad - hence the comment above about both projectors needing to work at the same resolution.
Can get VGA/VGA cards or DVI/DVI cards, and these work the same as the VGA/DVI that we have - but not sure if you can get these inside external devices for use with a laptop.
In Windows XP the third card appears greyed out in the Display Control Panel applet, and I need to use the horrible ATI software to enable cloning - which was initially quite hard to find, but was finally found under the configuration wizard and nowhere else.
Last edited by
brainier on Fri Dec 16, 2005 3:27 pm, edited 1 time in total.