Peace, colinl8,
Steam supports play under Linux through Proton. That is how the Steam Deck runs most games. I'm confident there is an easy solution to get Steam to skip/ignore the DX install script, but I'm a new Linux user and don't know the proper incantation. I know, from checking ProtonDB, that user Linux users are able to run BG3. I've tried several launch option strings, see above, but none of them have had any affect. I've even reinstalled, hoping the most recent BG3 patch and Proton 8.0.3 would sort it out, but no joy. I am hoping that some other Linux user with stronger juju will read this and gift Me their knowledge. Thanks for replying.
James R. McClure Jr.