Knuckle Sandwich Demo (2121940)

Compatibility Report

• Name of the game with compatibility issues: Knuckle Sandwich Demo
• Steam AppID of the game: 1012570 (Full Game), 2121940 (Demo, the one I'm using)

System Information

• GPU: 8 RDNA 2 CUs, 1.0-1.6GHz (up to 1.6 TFlops FP32)
• Driver/LLVM version: Unknown/Steam Deck Default
• Kernel version: 5.13.0-valve36-1-neptune
• Proton version: Proton Experimental
• NOTE: This is a Steam Deck

I confirm:

• that I haven't found an existing compatibility report for this game.
• that I have checked whether there are updates for my system available.

Symptoms

Before you get in-game, you have the option to "Play from the Beginning" or "Skip to Chapter 1". If you select "Play from Beginning", the game runs fine until reach the "Space Cleaner" minigame (it crashes). If you choose the "Skip to Chapter 1" option, the game crashes while attempting to load in the map. In the log I included, I choose the "Skip to Chapter 1" option.

Log

steam-2121940.log

Reproduction

1. Boot into the game using Proton
2. When given the option, do not change any settings
3. When given the option to, "Skip to Chapter 1"
4. Wait for the game to crash! It only takes a few seconds :)

Suspicions

My major suspicion is that using dxvk-2.1 is breaking the game, and that dxvk-2.0 will fix the game. Where did I get this idea? Well, I tried using bottles (with sys-wine 7.0.1 and dxvk 2.0) and it ran just fine. If I switched to dxvk 2.1 however, the game would crash. I would definitely compile a custom version of proton with dxvk-2.0 to test my theory, but I unfortunately don't know how to do that.

Start with the attached steam-2121940.log and reproduce the crash using the listed Proton Experimental steps on a Steam Deck. Compare the reported behavior with the DXVK 2.0 and 2.1 configurations mentioned in the report; done means identifying the compatibility cause and confirming a working configuration or fix.