if I use the DVI cable both ends (DVI-to-DVI), I can see they worked on Both Sony and even Dell monitors,
as recondas suggested (thank you so much, recondas)
You're very welcome.
So, does the cable make the difference??
Yes - In as much as it provides a DVI-I compliant connection between your Fuel and monitor
. Sync-on-green (and any other quasi-proprietary analog peculiarities your DVI-to-HD15 cable might be wired to provide) aren't an issue if you use a fully compliant DVI-to-DVI connection.
- the cable I have been using is DVI(Fuel)-to-VGA/HD15(display), which came with Fuel.
Depending on the original source (SGI or a third party) it might have been intended for a specific Fuel/display combination. You might still be able to use it - if you'd like to try I'd suggest mapping the pin-out with a multi-meter so you can see if the signalling it provides is a match for the HD15 port on the monitor you intend to use.