Does any kind soul out there know the exact pinout of the Image Sync Cable ?
SGI: Video
Need Help configuring Onyx4 UltimateVision Image Sync Cable pinout
I believe I have those cables from an Onyx4 rack. I will dig them out and get you a pin out. Feel free to hound me with PMs in a few days in case I ADHD this.
If the thing isn't on fire it's a software problem.