Hello @reedlove, closing #6912 to repost the same issue again could be considered a form of abuse of the issue tracker, and is non-productive.
Having written that, it's fairly clear now that there's some kind of NVIDIA driver specific issue happening here and there's better details on this at #6859.
Closing as duplicate.
Fragmenting the discussion of an issue across multiple issue reports just makes it harder to keep track of information. Feel free to add your findings to #6859.
@kisak-valve thanks
proton 8.0-3x1 2023-08
Compatibility Report
System Information
I confirm:
I cannot add a proton log, as it won't log anything while DXSETUP.exe is stuck.
Symptoms
A growing number of games will not successfully launch under Proton 8.0-3, hanging at "Running install script (Microsoft DirectX)". The user will be stuck here indefinitely unless they kill the "DXSETUP.exe" process.
Reproduction
1.) Install Steam
2.) Set "Run other titles with:" to "Proton 8.0-3" located under the "Compatibility" section of "Steam Settings".
3.) Try launching a game that requires the DirectX runtime.
Games will continue to launch after killing DXSETUP.exe, however, I have not tested to see if the runtime was actually installed correctly.
Let me know if you need more information.
Thanks.
-Reed