[Linux] Game fails to launch. Wine dump in game folder (attached)

[ktz]

The game was working perfectly up until 3 days ago. Now it won't launch at all.
I tried using various Proton versions (Experimental, Hotfix, 10.0-1 beta, GE 10-1, Cachy's) and even system's wine (staging 10.7-2). They all produce a dump in the game directory and exit. The dump attached has been produced by Proton Experimental.

My system:

OS: CachyOS x86_64
Kernel: Linux 6.14.7-2-cachyos
Uptime: 5 mins
Packages: 1766 (pacman), 5 (flatpak-system), 10 (flatpak-user)
Shell: fish 4.0.2
Display (M27Q): 1440x2560 @ 170 Hz in 32" [External]
Display (MAG274QRF-QD): 2560x1440 @ 165 Hz in 27" [External]
WM: Hyprland 0.49.0 (Wayland)
Theme: catppuccin-macchiato-maroon-standard+default [GTK2/3]
Icons: breeze-dark [GTK2/3/4]
Font: Segoe UI Variable Static Text (10pt) [GTK2/3], Noto Sans (10pt) [GTK4]
Cursor: breeze (24px)
Terminal: alacritty 0.15.1
Terminal Font: FiraMono Nerd Font (11pt)
CPU: AMD Ryzen 7 9800X3D (16) @ 5.27 GHz
GPU 1: AMD Radeon RX 7900 XTX [Discrete]
GPU 2: AMD Radeon Graphics [Integrated]
Memory: 6.02 GiB / 60.46 GiB (10%)
Swap: 0 B / 60.46 GiB (0%)
Locale: en_US.UTF-8

Packages updated since the 15th of May (I last successfully played the game on the evening of the 16th):

9992:[2025-05-15T00:03:35+0200] [ALPM] upgraded gupnp-igd (1.6.0-1.2 -> 1.6.0-2. - Pastebin.com

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I tried downgrading a number of packages (mostly kernel, mesa drivers, libraries, 32 bit libraries etc) to their previous version. Same behavior.
I tried using Steam Native and Steam's runtime. Same behavior.
I tried 4 different kernels: 6.14.7-2-cachyos, 6.14.6.zen1-1, linux-cachyos 6.14.6-2, linux-cachyos 6.14.5-3). Same behavior.
I tried disabling game recording and overlay. Same behavior.
I tried using vulkan and dx11. Same behavior (the only thing that changes is that the dump generated changes name. With vulkan is "accessviolation", with dx11 is "error").
The game runs fine on the same machine running Windows 11.
Other users on Discord have reported being able to launch the game on Linux. One other user has reported the same behavior on Linux Mint since yesterday.


Also, to exclude an old Linux issue:
cat /proc/sys/vm/max_map_count
1048576

I am unfortunately unable to read Wine's dump so I don't know how to troubleshoot further.

 

[back_biter+deadlock]

I play on linux on arch with no notable issues.

I force dx11 in steam, idk why but when I use vulkan I cna't even launch into the game.

 

[ktz]

I installed Plasma (X11) and sway and tried launching there. The game launches. It looks like the problem is hyprland.
I tried launching the game with the new PROTON_ENABLE_WAYLAND and I tried downgrading hyprland to 0.48.1-5 but there was no difference in behavior.