Compatibility Report

• Name of the game with compatibility issues: Penumbra: Black Plague Gold Edition
• Steam AppID of the game: 22120

System Information

• Steam Deck: Steam OS Stable Channel v3.4.4
• Driver/LLVM version: 4.6, Mesa 22.2.0 (git-17e5312102)
• Kernel version: 5.13.0-valve36-1-neptune
• Link to full system information report as Gist
• Proton version: 7.0-6 and Experimental

I confirm:

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

steam-22120.log

Symptoms

On Native version: game crashes upon launching the game.
On Proton: game runs great and doesn't crash before reaching the title screen. But in game the entire screen is black unless you turn off Post Processing Effects. But turning off PPE makes the lighting nonfunctional.

Reproduction

Launch game. (Get past title screen.)