I saw this thread by chance.
viewtopic.php?t=3903&start=12
gumanzoy Bullseye custom build shows that the table I made needs correcting/updating.
i.e. it is possible to get nvidia v340 driver working in Bullseye.
viewtopic.php?t=3062&hilit=nvidia&start=39
After testing gumanzoy custom build, I also found postings that some people managed to use sid repo to install legacy nvidia driver v340 for Bullseye.
https://www.reddit.com/r/debian/comment ... debian_11/
https://www.reddit.com/r/debian/comment ... th_nvidia/
I tried to follow the steps (by adding/using sid repo). It didn't give errors. For a moment I was hopeful that I can have n340 driver in Bullseye.
It didn't work for me. Just gave a blank screen when finished booting.