protonscr

(Oblivion, Squad) Unreal Engine Games crash on start up err:service:device_notify_proc failed to get event, error 1726

protonclosed
ValveSoftware/Proton#9384 · opened 2026-01-10 by Alkarin · updated 2026-01-10 · 1 comments · github
AAlkarin 2026-01-10 github

Compatibility Report

  • Name of the game with compatibility issues: Oblivion Remastered, SQUAD
  • Steam AppID of the game: 2623190, 393380

System Information

  • GPU: AMD Radeon RX 7900 XTX

  • Video driver version: Mesa 1:25.3.3-4

  • Kernel version: 6.18.3-2-cachyos

  • Full steam system information:
    Computer Information:
    Manufacturer: Gigabyte Technology Co., Ltd.
    Model: Z790 UD AC
    Form Factor: Desktop
    No Touch Input Detected
    Processor Information:
    CPU Vendor: GenuineIntel
    CPU Brand: Intel(R) Core(TM) i7-14700K
    CPU Family: 0x6
    CPU Model: 0xb7
    CPU Stepping: 0x1
    CPU Type: 0x0
    Speed: 5500 MHz
    28 logical processors
    20 physical processors
    Hyper-threading: Supported
    FCMOV: Supported
    SSE2: Supported
    SSE3: Supported
    SSSE3: Supported
    SSE4a: Unsupported
    SSE41: Supported
    SSE42: Supported
    AES: Supported
    AVX: Supported
    AVX2: Supported
    AVX512F: Unsupported
    AVX512PF: Unsupported
    AVX512ER: Unsupported
    AVX512CD: Unsupported
    AVX512VNNI: Unsupported
    SHA: Supported
    CMPXCHG16B: Supported
    LAHF/SAHF: Supported
    PrefetchW: Unsupported
    BMI1: Supported
    BMI2: Supported
    F16C: Supported
    FMA: Supported
    Operating System:
    "CachyOS" (64 bit)
    Kernel Name: Linux
    Kernel Version: 6.18.3-2-cachyos
    X Server Vendor: The X.Org Foundation
    X Server Release: 12401009
    X Window Manager: KWin
    Steam Runtime Version: steam-runtime_1.0.20251202.187498
    Client Information:
    Version: 1766451605
    Browser GPU Acceleration Status: Enabled
    Browser Canvas: Enabled
    Browser Canvas out-of-process rasterization: Enabled
    Browser Direct Rendering Display Compositor: Disabled
    Browser Compositing: Enabled
    Browser Multiple Raster Threads: Enabled
    Browser OpenGL: Enabled
    Browser Rasterization: Enabled
    Browser Raw Draw: Disabled
    Browser Skia Graphite: Disabled
    Browser Video Decode: Enabled
    Browser Video Encode: Disabled
    Browser Vulkan: Disabled
    Browser WebGL: Enabled
    Browser WebGL2: Enabled
    Browser WebGPU: Disabled
    Browser WebNN: Disabled
    Video Card:
    Driver: AMD AMD Radeon RX 7900 XTX (radeonsi, navi31, LLVM 21.1.6, DRM 3.64, 6.18.3-2-cachyos)
    Driver Version: 4.6 (Compatibility Profile) Mesa 25.3.3-arch1.4
    Desktop Color Depth: 24 bits per pixel
    Monitor Refresh Rate: 143 Hz
    VendorID: 0x1002
    DeviceID: 0x744c
    Revision Not Detected
    Number of Monitors: 2
    Number of Logical Video Cards: 1
    Primary Display Resolution: 2560 x 1440
    Desktop Resolution: 5120 x 1440
    Primary Display Size: 23.50" x 13.23" (26.97" diag), 59.7cm x 33.6cm (68.5cm diag)
    Primary VRAM: 24576 MB
    Sound card:
    Audio device: USB Mixer
    Memory:
    RAM: 31850 Mb
    VR Hardware:
    VR Headset: None detected
    No VR configuration with trackers detected
    Most number of trackers in a session: 0
    Miscellaneous:
    UI Language: English
    LANG: en_US.UTF-8
    Total Hard Disk Space Available: 3754148 MB
    Largest Free Hard Disk Block: 2827065 MB
    Storage:
    Number of SSDs: 4
    SSD sizes: 8001G,4000G,4000G,2000G
    Number of HDDs: 0
    Number of removable drives: 0

  • Proton version: Proton Experimental, Proton GE 10-28, and all other Proton versions I've tried

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.

Symptoms

There are multiple games that will always crash instantly on start up, or sometimes a few seconds into loading in. Always with the same errors. The common theme seems to be games running on Unreal Engine, although some unreal Engine games (like Hell Let Loose, Manor Lords, run fine. In the logs some of the later errors may change, but I always see a failed to get event, error 1726 error log. I've spent the last couple of weeks trying to troubleshoot and fix on my own asking AI questions, recompiling shaders, using different proton versions, rebuilding prefixes etc, nothing has worked. I've also run extensive GPU benchmarks and memtester, CPU hardware tests, and SSD drive health checks, all came up with no issues.

Reproduction

Click "PLAY" via steam
Game opens to initial black screen
Game crashes/closes immediately
Opens unreal engine crash report Modal/GUI with no error/crash information

steam-2623190.log

I have a steam log for AppID 393380 but its failing to upload here shrug

EDIT:
Steam log for Squad (App ID 393380) Let me know if this link works for you, I was unable to upload it normally for some reason: https://drive.google.com/file/d/1NU3lrK0IFteDN4h2uqV7WjKavRcAZqWa/view?usp=sharing

Kkisak-valve maintainer 2026-01-10 github

Hello @Alkarin, issues with these games should be evaluated on a per-game basis and can not be generalized. Please add a comment to #938 and #8622 with the symptoms you're seeing with those games.

Skimming over your Proton logs, I weakly suspect an XeSS / RADV snafu of some kind, but it's not clear enough for my eyes to tell. What is clear is that the're not the same XeSS versions between the two games, they might be failing in subtly different ways. The error you're pointing out is way after the point that the games have fallen over and is after the Unreal engine started to do a controlled shutdown.

Proton versions