Hey I don't know how many people out there have first gen Reverbs, but I just fixed mine using the cable bypass mod found on Reddit here:
https://www.reddit.com/r/HPReverb/comments/n9tq7q/g1_cable_mod/Mine was in the closet gathering dust and I was thinking about selling it for parts. I just built a new Intel-based PC to replace my aging Ryzen 7 build. So I thought I'd try the Reverb with the new system, since there are known issues with Reverbs and AMD-based systems. Based on its behavior - working for a second until I turn my head, then blacking out - reseating the USB cord into a different port fixed the issue briefly, but always recurred. Just seemed clearly like a connection problem.
I found a post about this cable mod, and another post that said the majority of the problems with the Reverb were from the internal mini-Display port right angle connector and the pigtail cable leading out of the headset. Decided to give it a try, as the unit was basically scrap value to me now. Looks like crap, but solved the connection problem!
My son has a cheap 3D printer and he''s going to print me the bracket described in the article so the cable is seated more firmly. But it survived a couple of flights last night without issue.
I really appreciate the lighter weight of the Reverb over the Oculus Quest 2, with its heavy battery. And the Reverb has a little better resolution and a slightly wider FOV. But the overly stiff cable is a big negative. The Quest 2 has far better hand controllers but I don't use those anyway.