DVI not working but VGA is on 7300GT on Mac Pro

I ran into an odd issue where upon starting up Mac Pro, my second 7300 GT Card was not outputting video to monitors 2 & 3. They were connected to my 2 ViewSonic 2025 LCD's. The stock video card worked fine. I powered down the Mac and still no joy after resetting PRAM and re-seating the card. Next I tried using DVI to VGA adapter and plugging into the ViewSonics VGA ports and this worked fine. I'm stumped-any ideas? Could it be the displays? If so, it seems odd that both LCD's would do it at the same time.

You say monitors two and three, do you have two video cards or are you splitting a signal?

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itexpress wrote:
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I think that you might need something link this.
http://us.startech.com/product/SP123DP2DVI-Triple-Head-DisplayPort-to-DVI-Multi-Monitor-Adapter
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It is pretty expensive,and it would be nice to know the limit.

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>
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sounds more like Bluetooth rather than moue, but w/o knowing w/o posting mac model type/year we... will... not... know... what you have
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DVI not working but VGA is on 7300GT on Mac Pro

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