Unable to launch - Fedora 40 - Nouveau with Nvidia

[Nannow]

I decided to go back to the game to try out the new update.
I installed the game through Steam as normal, and enabled Proton, GEProton8-2 at first.

When launching the game I would have this error:
"Failed to initialize graphics.
Make sure you have DirectX 11 installed, have up to date
drivers for your graphics card and have not disabled
3D acceleration in display settings.
InitializeEngineGraphics failed"

When this happened, the game would not launch at all.

I tried forcing wine3d to check if it would work:
PROTON_USE_WINED3D=1 %command%

With this, the game will start and I can get to the "press any button" screen. There, when I press any button it will start loading and them crash the game.

Trying older Proton versions (like 7.0) I would be able to launch the game without any extra parameters (I guess with dxvk, since I'm not forcing wine3d), however the game would get to the "Press any button" screen and then, when it start loading, it would just be there forever (I waited for like 15 minutes).
The little hourglass would be glowing (like oscillating the lights) and then it suddently stops after 15~20 seconds. And then it just stays frozen like this forever.

Does anyone have any ideia on what to try or do? I can play other games (tried RimWorld and Stardew Valley on Fedora 40 with Nouveau) without problems.
I installed everything DXVK related from the repos, but I don't know where to go with this.

I would also prefer to stay on Nouveau since the desktop experience is way better than with the Nvidia drivers.

Thanks! <3

[blackbrook]

Try not forcing it to use Proton. It's working for me fine right now under Steam running on openSUSE with compatibility set to...default I guess, because I currently don't have "Force compatibility" checked. I had a problem with it crashing recently with it set to force a specific version of Proton (which had been working but stopped working after some update, it seems).

[mediocre]

You could try running with proton experimental, but if that doesn’t work:
Since you’re using nouveau, which means you’re using the open source nvk mesa vulkan driver, you might want to try installing the latest-git-version of the mesa package.
Here’s a link for doing that on fedora:
https://discussion.fedoraproject.org/t/fadeing-mesa-git/88269
If the above doesn’t work, then I think your only option would be to switch back to the closed source nvidia driver

[Nannow]

Thank you both!
I will give it a try tomorrow and may come back with the results.