# LidarPointCloud rendering fails with Vulkan error

**URL:** <https://forums.unrealengine.com/t/lidarpointcloud-rendering-fails-with-vulkan-error/461375>\
**Category:** Rendering\
**Tags:** vulkan, unreal-engine, Rendering, point-cloud, UE4, question\
**Created:** [February 13, 2020, 7:30pm UTC](https://forums.unrealengine.com/t/lidarpointcloud-rendering-fails-with-vulkan-error/461375 "2020-02-13T19:30:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![anonymous\_user\_6e99e5d8](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6e99e5d8](https://forums.unrealengine.com/u/anonymous_user_6e99e5d8)\
**Post date:** [February 13, 2020, 7:30pm UTC](https://forums.unrealengine.com/t/lidarpointcloud-rendering-fails-with-vulkan-error/461375/1 "2020-02-13T19:30:24Z")

</div>

Just imported a simple point cloud and the import works. When I try to open it, the editor crashes with the following SIGSEGV.

I’m using EU4.24.2 on Ubuntu 16.04,  
Vulkan driver v1.1.73 and  
LidarPointCloud 0.80 (beta).

Is there perhaps any workaround before official LidarPointCloud for Linux is released? Or do you know if this is going to be officialy released soon?

```
Exception was "SIGSEGV: invalid attempt to read memory at address 0x0000000000000068"

libnvidia-glcore.so.440.33.01!UnknownFunction(0x12034d6)
libnvidia-glcore.so.440.33.01!UnknownFunction(0x12311d2)
libUE4Editor-VulkanRHI.so!bool FVulkanGraphicsPipelineDescriptorState::InternalUpdateDescriptorSets(FVulkanCommandListContext*, FVulkanCmdBuffer*) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/VulkanRHI/Private/VulkanPipelineState.cpp:331]
libUE4Editor-VulkanRHI.so!FVulkanPendingGfxState::PrepareForDraw(FVulkanCmdBuffer*) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/VulkanRHI/Private/VulkanPendingState.cpp:433]
libUE4Editor-VulkanRHI.so!FVulkanCommandListContext::RHIDrawIndexedPrimitive(FRHIIndexBuffer*, int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/VulkanRHI/Private/VulkanCommands.cpp:808]
libUE4Editor-RHI.so!FRHICommandDrawIndexedPrimitive::Execute(FRHICommandListBase&) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/RHI/Public/RHICommandListCommandExecutes.inl:241]
libUE4Editor-Renderer.so!FRHICommand::ExecuteAndDestruct(FRHICommandListBase&, FRHICommandListDebugContext&) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/RHI/Public/RHICommandList.h:726]
libUE4Editor-RHI.so!FRHICommandListExecutor::ExecuteInner_DoExecute(FRHICommandListBase&) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/RHI/Private/RHICommandList.cpp:356]
libUE4Editor-RHI.so!FRHICommandListExecutor::ExecuteInner(FRHICommandListBase&) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/RHI/Private/RHICommandList.cpp:621]
libUE4Editor-RHI.so!FRHICommandListExecutor::ExecuteList(FRHICommandListBase&) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/RHI/Private/RHICommandList.cpp:645]
libUE4Editor-RHI.so!FRHICommandListBase::~FRHICommandListBase() [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/RHI/Private/RHICommandList.cpp:878]
libUE4Editor-RHI.so!FRHICommandWaitForAndSubmitSubList::Execute(FRHICommandListBase&) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/RHI/Private/RHICommandList.cpp:1078]
libUE4Editor-RHI.so!FRHICommand::ExecuteAndDestruct(FRHICommandListBase&, FRHICommandListDebugContext&) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/RHI/Public/RHICommandList.h:726]
libUE4Editor-RHI.so!FRHICommandListExecutor::ExecuteInner_DoExecute(FRHICommandListBase&) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/RHI/Private/RHICommandList.cpp:356]
libUE4Editor-RHI.so!FExecuteRHIThreadTask::DoTask(ENamedThreads::Type, TRefCountPtr const&) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/RHI/Private/RHICommandList.cpp:409]
libUE4Editor-RHI.so!TGraphTask::ExecuteTask(TArray >&, ENamedThreads::Type) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/Core/Public/Async/TaskGraphInterfaces.h:847]
libUE4Editor-Core.so!FNamedTaskThread::ProcessTasksNamedThread(int, bool) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/Core/Private/Async/TaskGraph.cpp:686]
libUE4Editor-Core.so!FNamedTaskThread::ProcessTasksUntilQuit(int) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/Core/Private/Async/TaskGraph.cpp:582]
libUE4Editor-RenderCore.so!FRHIThread::Run() [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/RenderCore/Private/RenderingThread.cpp:288]
libUE4Editor-Core.so!FRunnableThreadPThread::Run() [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.cpp:25]
libUE4Editor-Core.so!FRunnableThreadPThread::_ThreadProc(void*) [/home/aleksandar/unreal/UnrealEngine-release/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.h:177]
libpthread.so.0!UnknownFunction(0x76b9)
libc.so.6!clone(+0x6c)

```

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<div class="post-metadata">

**Author:** ![battulgaAndo](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@battulgaAndo](https://forums.unrealengine.com/u/battulgaAndo)\
**Post date:** [March 29, 2023, 5:17pm UTC](https://forums.unrealengine.com/t/lidarpointcloud-rendering-fails-with-vulkan-error/461375/2 "2023-03-29T17:17:46Z")

</div>

bump

It’s still not working on Ubuntu 20.04 with UE 4.27.2.

I tried importing the same LAS file in Windows, and it worked just fine.

Has anyone tested in UE 5.2? Also, has anyone found a workaround for this issue?