Hi. I have Ubuntu Mate 22.04 and have the nvidia-driver-595-open installed. I am told that the driver is missing 32-bit libraries from GitHub Proton:
https://gist.github.com/a1872/5df3ebebcdc7f2c7635754fec1c52978#file-gistfile1-txt-L340-L354 is the section to focus on. The NVIDIA proprietary driver requires that the video driver’s running kernel module, 32 bit userspace libraries, and 64 bit userspace libraries are all installed and exactly the same version to work properly. Your driver install is missing the 32 bit libraries.
I was wondering how to get these 32-bit libraries so I can use Proton to run Splinter Cell: Chaos Theory. There is no error message that appears when I try to run the game, either from the Steam Library or from a launcher I created–the “Play” button simply becomes bold green again.
I was giving OP a little time to discover that thread since it’s directly on point and not that old. But you posted a link to that thread which is what I would have posted so now I don’t need to!
To summarize, OP: the 32-bit libraries for the 595 nvidia driver didn’t get built for ubuntu releases prior to 26.04. I seem to remember that this has happened before, so you’ll either have to wait until the 595 driver is updated and those 32-bit libraries are built, or upgrade to 26.04 which has them, or downgrade to the 580 nvidia driver (which is still supported) that has the 32-bit libraries. I have no idea when the 595 driver will be updated, though. Could be a while.