All, I have a 2929d monitor connected to a Windows 10 machine that is almost identical to the machine this monitor was shown working on. Only difference is the video card.
When I connect an just a lcd via HDMI everything works but as soon as I connect the crt I loose video on both. I have also tired using crate up driver. I made that work with my neotec 2720 (has a bad tube though).
I have also tried just using the Intel onboard gpu. No display either. It does show the disconnected message.
Any thoughts? Side note: I believe my friends machine this came from has a arcade Vga from ultimarc.