Mac mini, macbook + DVI to HDMI + projector = No soup for you!

This is driving me nuts!!! I have tried 3 different macs, 4 completely different cables/adapters and they all do exactly the same thing.
1. I connect the mac to the DVI to HDMI cable and/or adapter combo, then connect to the projector
2. I get 2-30 seconds of wonderful projector screen usage (it works, picture looks crystal clear)
3. Then POOF! No projector signal, though it appears mac recognizes the projector.
I can repeat from 1 using a different adapter and/or cable and I get exactly the same results, but if I re-use the same cable I used previously, I get no signal at all.
What the $%@! is going on here??? Is Apple black-listing my cables or something??? I'm using everything from cheap-o cables to $$$ cables with exactly the same result.I run this projector with absolutely no problem from a dell desktop via DVI to HDMI.
For what it's worth, I'm connecting to a LG HS201 projector.
using Core-2-duo macs either with pure DVI or mini-DVI

samberl wrote:
DVI to HMDI is not supported on the Core 2 Duo Mac Mini.
You need to connect via DVI or VGA to your projector.
I have had Core2Duo Mac minis working with Sony LCD TVs and a Toshiba Plasma via DVI to HDMI cables with no problems. Obviously audio has to be run separately. There have been many reports from others that this works. It should do since both DVI and HDMI support HDCP and both are digital video connections, this after all is why a simple DVI to HDMI cable works.
What can be an issue is if your trying to do things like 3D or YCbCr colour encoding. However standard video works fine. Another common issue is if your are switching inputs to the TV perhaps via an AV Receiver or if the TV is allowed to sleep or be turned off, in these cases the Mac can see the handshake signal disappear. It is for this sort of situation Gefen makes the DVI Detective+ and the HDMI Detective+.
Since in your case the common factor is your projector and not the computer or cables it might be it at fault. Early HDMI products did have HDCP handshaking problems.
People have been using Mac minis as media center computer with HDMI for ages since the Mac mini is small and quiet, this probably goes back as far as G4 models let alone Core2Duo models.

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