Hello @HughPH, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/6367#issuecomment-1345346786.
proton 6.12-ge-2x1 2022-12proton 6.3x1 2022-12proton 7.0x1 2022-12proton 7.0-5x1 2022-12
Compatibility Report
System Information
I confirm:
Symptoms
Portal with RTX refuses to start without Driver 525.60 (shows an error message requesting 525.60) but with driver 525.60 it crashes before the splash screen, making this different to ticket #6367
Reproduction
Install everything and try to run it?
Running steam in a terminal and starting the game with proton 7.0-5 or Experimental, hl2.exe starts and launches NvRemixBridge.exe but yields the following:
In the middle is an error:
Runtime Error (secondary thread): in Open at line 867 of E:\w\ca6c508eae419cf8\USD\pxr\usd\usd\stage.cpp -- Failed to open layer @./lss/gameReadyAssets/replacements.usd@Launching with the default runtime (6.3-3) or 6.3-8 Steam thinks the game is started, but no window appears. hl2.exe starts, but not NvRemixBridge.exe. There is no output, visual or audio, and Steam just thinks it's running until I tell it to Stop. Here's the 6.3-3 output - same for 6.3-8:
With Proton-6.12-GE-2 I get as far as the menu screen but it doesn't look pretty, and crashes out as soon as trying to start a game.