Background I have a Macbook Pro 4,1 and I am trying to connect it to an Insignia HDtv through the VGA port (I have a DVI to VGA adapter). It will detect it as the proper display when I use a short VGA cable with all the pins. But when I use my 15 ft long VGA cable that has 1 pin missing (i'm guessing that the pin is used for detecting displays) it detects is as a "VGA display". Here's the problem when i use the short cable in 1080p it takes up the whole screen as it is supposed to, but when I use the long cable it doesn't take up the whole screen. My half solution I connect my macbook pro to the HDtv using the short cable. Then I disconnect the VGA cable from the DVI adapter. Then I connect the long cable to the DVI adapter. problem solved. What I want As you can tell, this process is annoying as hell. I'm tying to find a way to trick my Macbook into thinking that it has detected the HDtv. Any suggestions would be much appreciated. Thanx.