Is anybody crashing when opening “Niagara Advanced” from the Content Examples ?
Looks like on my Linux with my GTX 980 Ti (drivers 455.45.01) it raises an assert when turning “realtime” on in the viewport with the Vulkan backend:
[2020.12.03-22.07.11:222][100]LogVulkanRHI: Error: Result failed, VkResult=-4
at /mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/VulkanRHI/Private/VulkanMemory.cpp:4591
with error VK_ERROR_DEVICE_LOST
[2020.12.03-22.07.11:253][100]LogCore: Error: appError called: Fatal error: [File:/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/VulkanRHI/Private/VulkanUtil.cpp] [Line: 803]
Result failed, VkResult=-4
at /mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/VulkanRHI/Private/VulkanMemory.cpp:4591
with error VK_ERROR_DEVICE_LOST
0x00007feb12b6b29f libUE4Editor-VulkanRHI.so!VulkanRHI::VerifyVulkanResult(VkResult, char const*, char const*, unsigned int) [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/VulkanRHI/Private/VulkanUtil.cpp:802]
0x00007feb12b245b9 libUE4Editor-VulkanRHI.so!VulkanRHI::FFenceManager::WaitForFence(VulkanRHI::FFence*, unsigned long long) [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/VulkanRHI/Private/VulkanMemory.cpp:4591]
0x00007feb12ada74d libUE4Editor-VulkanRHI.so!FVulkanCommandBufferManager::WaitForCmdBuffer(FVulkanCmdBuffer*, float) [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/VulkanRHI/Private/VulkanCommandBuffer.cpp:457]
0x00007feb12b43d6e libUE4Editor-VulkanRHI.so!FVulkanDynamicRHI::RHIReadSurfaceData(FRHITexture*, FIntRect, TArray<FColor, TSizedDefaultAllocator<32> >&, FReadSurfaceDataFlags) [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/VulkanRHI/Private/VulkanRenderTarget.cpp:323]
0x00007fec56ee9f1e libUE4Editor-Engine.so!FViewport::GetRawHitProxyData(FIntRect)::$_104::operator()(FRHICommandListImmediate&) const [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/Engine/Private/UnrealClient.cpp:1716]
0x00007fec56eea4ca libUE4Editor-Engine.so!TEnqueueUniqueRenderCommandType<FViewport::GetRawHitProxyData(FIntRect)::ReadSurfaceCommandName, FViewport::GetRawHitProxyData(FIntRect)::$_104>::DoTask(ENamedThreads::Type, TRefCountPtr<FGraphEvent> const&) [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/RenderCore/Public/RenderingThread.h:183]
0x00007fec56eea81c libUE4Editor-Engine.so!TGraphTask<TEnqueueUniqueRenderCommandType<FViewport::GetRawHitProxyData(FIntRect)::ReadSurfaceCommandName, FViewport::GetRawHitProxyData(FIntRect)::$_104> >::ExecuteTask(TArray<FBaseGraphTask*, TSizedDefaultAllocator<32> >&, ENamedThreads::Type) [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/Core/Public/Async/TaskGraphInterfaces.h:886]
0x00007fec58e61d8c libUE4Editor-Core.so!FNamedTaskThread::ProcessTasksNamedThread(int, bool) [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/Core/Private/Async/TaskGraph.cpp:709]
0x00007fec58e6048e libUE4Editor-Core.so!FNamedTaskThread::ProcessTasksUntilQuit(int) [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/Core/Private/Async/TaskGraph.cpp:600]
0x00007fec5380573f libUE4Editor-RenderCore.so!RenderingThreadMain(FEvent*) [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/RenderCore/Private/RenderingThread.cpp:372]
0x00007fec53850972 libUE4Editor-RenderCore.so!FRenderingThread::Run() [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/RenderCore/Private/RenderingThread.cpp:526]
0x00007fec58f11c37 libUE4Editor-Core.so!FRunnableThreadPThread::Run() [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.cpp:25]
0x00007fec58ed6003 libUE4Editor-Core.so!FRunnableThreadPThread::_ThreadProc(void*) [/mnt/dev/UE4/Engine/UnrealEngine_4-26-0/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.h:185]
0x00007fec598573e9 libpthread.so.0!UnknownFunction(0x93e8)
0x00007fec50223293 libc.so.6!clone(+0x42)