The screen goes dark & unrecoverable during normal use, not while using ml tools, so I just assumed it was a problem with nvidia's drivers being generally disagreeable with Fedora.

You make a a good point, I've been having one card do double-duty as hdmi output and GPGPU. I'll try the motherboard's built-in hdmi and see how that goes.

I've been really busy with other stuff for a few weeks and haven't really thought about the best way to fix this. Thanks for the suggestion!