FIXED black screen and crash on start

[Habanero Pickles]

I fixed my problems with getting a black screen on first launch and/or a crash. These problems were occurring on my pc running Ubuntu 18 and an NVIDIA 750 TI, so if you're a Linux gamer read on.

The first problem was that I would get a black screen at first launch. After an eternity (15 minutes) the Capcom and other logos would pop up. So this first long black screen occurs while the software compiles shaders or something. Be patient!

After the logos, I get to click through a few EULAs and brightness setting. Then the program crashes with a FATAL ERROR popup. The exact text was
E_INVALIDART : IDX11Device-
>CreateTexture3D(&desc.Texture3D.pinitdata.&ptex)

I figured this was a driver issue so proceeded to update my Nvidia drivers from 430 to 435. In hindsight this may have been unnecessary. After upgrading to driver version 435, I didn't even get the black screen. Just nothing.

The real fix was probably installing VULKAN-UTILS from the terminal. Like this:
sudo apt install vulkan-utils

I edited the "user_settings.py" file in the Proton 4.11 folder in SteamApps/Common/
Specifically, just put a # at the beginning of the line
# "PROTON_USE_WINED3D": "1",

The # symbol comments out that line so it isn't run. This will force the use of Vulkan for 3D stuff. This might not have been necessary to edit this file. I didn't test it.

The last thing I did was I selected NVIDIA driver version 430 from the Additional Drivers menu in System Settings. Restart the computer. Launch Steam, launch Monster Hunter World.

And she works!!!

I hope this can help someone. My time in game was reported as 3 hours without actually playing. This took a good long while to figure out.

Thanks to Cloud Zimmermann!