Sadly, just connecting vsync to sync-ground probably won't help - you'll almost certainly need some kind of 50Hz pulse. Most monitors go into power-saving unless they're receiving a regular vsync...
I'd imagine the ID bits go into the common ground marked... and are probably (I'm not sure with modern monitors) for plug-n-play type functions.
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I can't understand why people are frightened of new ideas. I'm frightened of the old ones. -- John Cage (1912 - 1992)
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