UE 5.8 Release - Instant Vulkan Crash (VK_ERROR_DEVICE_LOST) on Linux with RTX 3090 Ti / NVIDIA Driver

[VashTheBrutal]

Hello, I have opened an issue on MESA.

RADV GFX1201/RX 9070 XT: Unreal Engine 5.8 vkQueueSubmit device lost with...

I also opened a bug on Epic:

500×500 2.84 KB

Summary Unreal Engine 5.8 source build on Linux reproducibly crashes in the Vulkan RHI on AMD Radeon RX 9070 XT / RDNA4 / GFX1201 using Mesa RADV. The immediate UE failure is VK_ERROR_DEVICE_LOST from vkQueueSubmit, followed by FVulkanDynamicRHI.TerminateOnGPUCrash. The strongest captured crash includes a Vulkan device fault report showing a GPUVM invalid read. The matching Linux kernel log shows AMDGPU gfxhub page faults from UnrealEditor, followed by graphics/compute ring timeouts and reset r…

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