Why Aren’t My Steam Games Launching on Ubuntu?

You can check protondb.com/explore to see how different games fare on each Proton version. If you have multiple GPUs, ensure your Nvidia GPU is set as the primary. Go into the game properties in Steam and check the launch options or compatibility settings to force a specific Proton version. It's a bit of a puzzle sometimes, but it usually can be fixed!

Are your games on a partition you previously used with Windows? If so, and the drive is formatted in NTFS, this might be causing issues with Steam on Linux.

Don’t forget to check your logs located at /home/yourusername/.steam/steam/logs for more information on what's failing. It might give you clues on what’s going wrong.

You might want to run Steam directly from the terminal by typing 'steam' to catch any error messages that pop up. Also, if your game requires Proton, check out protondb.com for the recommended Proton version for it. For older GPUs like yours, some games might need to add the command `PROTON_USE_WINED3D=1 %command%` in the launch options, though this can affect performance if it's not needed.

It's important to mention your Linux distribution and hardware details when asking for help. Different games can require different versions of Proton, so you might have to experiment a bit. Newer games often work best with the latest version of Proton, while older titles might need an earlier release.