Hello @Patola, my eyes seem to be reading an access violation (c0000005) in a thread called RenderThread 2. It's unclear from the log if the game is using AMDGPU-PRO or mesa/RADV. Can you force the game (and SteamVR) to use mesa/RADV and verify it behaves the same?
Is there any way to force AMDGPU? I'm using amdgpu (RADV) by default, I have amdgpu-pro installed but I'm not running anything to make it active, like settings the VK_ICD_FILENAMES to amdgpupro or something and glmark2 tells me I'm using AMD RADV SIENNA_CICHLID, so I am using the open-source driver only. Should I nevertheless run it with VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/radeon_icd.i686.json:/usr/share/vulkan/icd.d/radeon_icd.x86_64.json prepended to the launch options?
Forced vulkan with the mentioned variables, launch options: PROTON_LOG=1 VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/radeon_icd.i686.json:/usr/share/vulkan/icd.d/radeon_icd.x86_64.json %command%
steam-1902150.log
Same result, identical as previously. Which should be, since I'm using only amdgpu and not amdgpu-pro.
steam-1902150-WINEDEBUG=+openxr.log
And this other log uses WINEDEBUG=+openxr instead of
steam-1902150-WINEDEBUG=+openxr.log
PROTON_LOG=1
And now I actually forced amdgpu-pro (using VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/amd_pro_icd32.json:/usr/share/vulkan/icd.d/amd_pro_icd64.json PROTON_LOG=1 %command%) but the result was the same. Same dialog, and it seems the error is the very same:
100200.223:0128:012c:warn:seh:dispatch_exception "LowLevelFatalError [File:D:\\build\\++UE5\\Sync\\Engine\\Source\\Runtime\\RenderCore\\Private\\RenderingThread.cpp] [Line: 934] \nRendering thread exception:\r\nFatal error!\r\n\r\nUnhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000\r\n\r\n0x00007f25cc0807f9 w"...
steam-1902150-amdgpu-pro.log
PROTON_LOG=1x2 2022-09PROTON_LOG=1`x1 2022-09WINEDEBUG=+openxr.log](https://github.com/ValveSoftware/Proton/files/9544015/steam-1902150-WINEDEBUG.%2Bopenxr.log)x1 2022-09WINEDEBUG=+openxr.log](https://github.com/ValveSoftware/Proton/files/9544042/steam-1902150-WINEDEBUG.%2Bopenxr.log)x1 2022-09WINEDEBUG=+openxr`x1 2022-09
Compatibility Report
System Information
I confirm:
Symptoms
When starting VR mode, the game shows an OK dialog with title "The UE5-StrangerVR Game has crashed and will close" and the message "Fatal Error!" and then quits.
Reproduction
A screenshot is attached along

steam-1902150.log
with the proton log.