./UE4editor crashes on first execution and compile after successful build,./UE4Editor crashes on first execution,First Running of ./UE4engine always crashes

This is getting very frustrating. Build is UE4 v4.26.2 in Ubuntu 20.04 on ASUS A10 AMD with 16GB RAM.

The build itself goes perfectly and running “make” looks good, too.

The first compile that happens when running ./UE4engine for the first time always crashes the same way. Along the way, it tries to compile about 5,000 shaders but still never works. 4+ hours for each build I’ve tried always ends in failure.

Suggested fixes that have NOT worked:

Anything to do with opengl4. I get the exact same failure message below with ./UE4Editor -opengl4

drivers for nvidia.

v4.21 to 4.27 all do this same thing.

building from source or downloading the zipfile all fail just like this.

Vulkan looks ok. I can run the vulkancube test app at it pops up and spins like it’s supposed to.

Vulkan IDE installation didn’t install any missing libraries to appease this problem.

First failure message:

Ensure condition failed: VendorId != EGpuVendorId::Unknown [File:/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanDevice.cpp] [Line: 182] [2021.05.08-22.50.01:732][ 0]LogCore: 0x00007fdd03ba7e22 Dladdr: 0.031547ms Open: 35.277388ms Search: 13.008314ms [2021.05.08-22.50.01:733][ 0]LogCore: 0x00007fdd03c33e85 Dladdr: 0.032492ms Open: 0.026448ms Search: 1.062901ms [2021.05.08-22.50.01:738][ 0]LogCore: 0x00007fdd03c301b2 Dladdr: 0.010213ms Open: 0.007711ms Search: 5.203391ms [2021.05.08-22.50.01:738][ 0]LogCore: 0x00007fdd03c2fdc7 Dladdr: 0.034334ms Open: 0.024149ms Search: 0.031106ms [2021.05.08-22.50.01:842][ 0]LogCore: 0x00007fdd778ab41c Dladdr: 0.006708ms Open: 58.196348ms Search: 45.176067ms [2021.05.08-22.50.01:852][ 0]LogCore: 0x000000000027f332 Dladdr: 0.015054ms Open: 9.154836ms Search: 1.029153ms [2021.05.08-22.50.01:853][ 0]LogCore: 0x000000000027625b Dladdr: 0.015530ms Open: 0.024000ms Search: 0.352516ms [2021.05.08-22.50.01:859][ 0]LogCore: 0x00007fdd745a4055 Dladdr: 0.002422ms Open: 6.107851ms Search: 0.086584ms [2021.05.08-22.50.01:859][ 0]LogCore: 0x00007fdd743bf0b2 Dladdr: 0.024641ms Open: 0.274822ms Search: 0.002269ms [2021.05.08-22.50.01:863][ 0]LogCore: 0x000000000025f4c8 Dladdr: 0.014687ms Open: 0.014836ms Search: 2.965988ms [2021.05.08-22.50.01:873][ 0]LogStats: FPlatformStackWalk::StackWalkAndDump - 0.227 s [2021.05.08-22.50.01:873][ 0]LogOutputDevice: Error: === Handled ensure: === [2021.05.08-22.50.01:873][ 0]LogOutputDevice: Error:
[2021.05.08-22.50.01:873][ 0]LogOutputDevice: Error: Ensure condition failed: VendorId != EGpuVendorId::Unknown [File:/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanDevice.cpp] [Line: 182]
[2021.05.08-22.50.01:873][ 0]LogOutputDevice: Error:
[2021.05.08-22.50.01:873][ 0]LogOutputDevice: Error: Stack:
[2021.05.08-22.50.01:873][ 0]LogOutputDevice: Error: [Callstack] 0x00007fdd03ba7e23 libUE4Editor-VulkanRHI.so!FVulkanDevice::FVulkanDevice(FVulkanDynamicRHI*, VkPhysicalDevice_T*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanDevice.cpp:182]
[2021.05.08-22.50.01:873][ 0]LogOutputDevice: Error: [Callstack] 0x00007fdd03c33e86 libUE4Editor-VulkanRHI.so!FVulkanDynamicRHI::SelectAndInitDevice() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanRHI.cpp:551]
[2021.05.08-22.50.01:873][ 0]LogOutputDevice: Error: [Callstack] 0x00007fdd03c301b3 libUE4Editor-VulkanRHI.so!FVulkanDynamicRHI::InitInstance() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanRHI.cpp:694]
[2021.05.08-22.50.01:873][ 0]LogOutputDevice: Error: [Callstack] 0x00007fdd03c2fdc8 libUE4Editor-VulkanRHI.so!FVulkanDynamicRHI::Init() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanRHI.cpp:241]
[2021.05.08-22.50.01:873][ 0]LogOutputDevice: Error: [Callstack] 0x00007fdd778ab41d libUE4Editor-RHI.so!RHIInit(bool) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RHI/Private/DynamicRHI.cpp:228]
[2021.05.08-22.50.01:874][ 0]LogOutputDevice: Error: [Callstack] 0x000000000027f333 UE4Editor!FEngineLoop::PreInitPreStartupScreen(char16_t const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Launch/Private/LaunchEngineLoop.cpp:2555]
[2021.05.08-22.50.01:874][ 0]LogOutputDevice: Error: [Callstack] 0x000000000027625c UE4Editor!GuardedMain(char16_t const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Launch/Private/Launch.cpp:127]
[2021.05.08-22.50.01:874][ 0]LogOutputDevice: Error: [Callstack] 0x00007fdd745a4056 libUE4Editor-UnixCommonStartup.so!CommonUnixMain(int, char*, int ()(char16_t const*), void (*)()) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Unix/UnixCommonStartup/Private/UnixCommonStartup.cpp:264]
[2021.05.08-22.50.01:874][ 0]LogOutputDevice: Error: [Callstack] 0x00007fdd743bf0b3 libc.so.6!__libc_start_main(+0xf2)
[2021.05.08-22.50.01:874][ 0]LogOutputDevice: Error: [Callstack] 0x000000000025f4c9 UE4Editor!_start()
[2021.05.08-22.50.01:874][ 0]LogOutputDevice: Error:

2nd failure message, a few minutes later.

[2021.05.08-23.19.42:797][ 0]LogStats: FPlatformStackWalk::StackWalkAndDump - 0.659 s [2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: === Handled ensure: === [2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error:
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: Ensure condition failed: (ImageCreateInfo.usage & VK_IMAGE_USAGE_SAMPLED_BIT) == 0 [File:/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanTexture.cpp] [Line: 429]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error:
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: Stack:
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79856c01ef libUE4Editor-VulkanRHI.so!FVulkanSurface::GenerateImageCreateInfo(FVulkanSurface::FImageCreateInfo&, FVulkanDevice&, VkImageViewType, EPixelFormat, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, ETextureCreateFlags, VkFormat*, VkFormat*, bool) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanTexture.cpp:429]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79856c91da libUE4Editor-VulkanRHI.so!FindOrCalculateTexturePlatformSize(FVulkanDevice*, VkImageViewType, unsigned int, unsigned int, unsigned int, unsigned char, unsigned int, unsigned int, ETextureCreateFlags) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanTexture.cpp:2819]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79856c8ffb libUE4Editor-VulkanRHI.so!FVulkanDynamicRHI::RHICalcTexture2DPlatformSize(unsigned int, unsigned int, unsigned char, unsigned int, unsigned int, ETextureCreateFlags, FRHIResourceCreateInfo const&, unsigned int&) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanTexture.cpp:2840]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f06677ea libUE4Editor-Engine.so!FTexture2DResource::CalcRequestedMipsSize() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/Rendering/Texture2DResource.cpp:164]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f065ea2d libUE4Editor-Engine.so!FStreamableTextureResource::InitRHI() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/Rendering/StreamableTextureResource.cpp:158]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79ed47f354 libUE4Editor-RenderCore.so!FRenderResource::InitResource() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Private/RenderResource.cpp:102]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79ed47faad libUE4Editor-RenderCore.so!BeginInitResource(FRenderResource*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Private/RenderResource.cpp:155]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f0a41c3e libUE4Editor-Engine.so!UTexture::UpdateResource() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/Texture.cpp:165]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f0a43fb2 libUE4Editor-Engine.so!UTexture::PostLoad() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/Texture.cpp:434]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f233f499 libUE4Editor-CoreUObject.so!UObject::ConditionalPostLoad() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/Obj.cpp:1082]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f00bb1e7 libUE4Editor-Engine.so!UMaterial::PostLoad() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/Materials/Material.cpp:3739]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f233f499 libUE4Editor-CoreUObject.so!UObject::ConditionalPostLoad() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/Obj.cpp:1082]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f249b7ab libUE4Editor-CoreUObject.so!EndLoad(FUObjectSerializeContext*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:1647]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f2499d0e libUE4Editor-CoreUObject.so!LoadPackageInternal(UPackage*, char16_t const*, unsigned int, FLinkerLoad*, FArchive*, FLinkerInstancingContext const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:1360]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f24972ef libUE4Editor-CoreUObject.so!LoadPackage(UPackage*, char16_t const*, unsigned int, FArchive*, FLinkerInstancingContext const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:1458]
[2021.05.08-23.19.42:797][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f2494791 libUE4Editor-CoreUObject.so!ResolveName(UObject*&, FString&, bool, bool, unsigned int, FLinkerInstancingContext const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:787]
[2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f249786c libUE4Editor-CoreUObject.so!StaticLoadObjectInternal(UClass*, UObject*, char16_t const*, char16_t const*, unsigned int, UPackageMap*, bool, FLinkerInstancingContext const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:848]
[2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f24935d2 libUE4Editor-CoreUObject.so!StaticLoadObject(UClass*, UObject*, char16_t const*, char16_t const*, unsigned int, UPackageMap*, bool, FLinkerInstancingContext const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:924]
[2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79eb7175da libUE4Editor-UnrealEd.so!UMaterialInterface* ConstructorHelpersInternal::FindOrLoadObject(FString&, unsigned int) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Public/UObject/ConstructorHelpers.h:36] [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79eb6fab5f libUE4Editor-UnrealEd.so!ConstructorHelpers::FObjectFinder::FObjectFinder(char16_t const*, unsigned int) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Public/UObject/ConstructorHelpers.h:109] [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79eb6b1119 libUE4Editor-UnrealEd.so!UHierarchicalLODSettings::UHierarchicalLODSettings(FObjectInitializer const&) [/home/rcd/UnrealEngine-4.26/Engine/Source/Editor/UnrealEd/Private/HierarchicalLOD.cpp:52] [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f21ac934 libUE4Editor-CoreUObject.so!UClass::CreateDefaultObject() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp:3707] [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79eb6b17fe libUE4Editor-UnrealEd.so!FHierarchicalLODBuilder::FHierarchicalLODBuilder(UWorld*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Editor/UnrealEd/Private/HierarchicalLOD.cpp:78] [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f0cae4d9 libUE4Editor-Engine.so!UWorld::UWorld(FObjectInitializer const&) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/World.cpp:361] [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f21ac934 libUE4Editor-CoreUObject.so!UClass::CreateDefaultObject() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp:3707] [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79f2451c68 libUE4Editor-CoreUObject.so!ProcessNewlyLoadedUObjects(FName, bool) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectBase.cpp:996] [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00000000002878b1 UE4Editor!FEngineLoop::PreInitPostStartupScreen(char16_t const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Launch/Private/LaunchEngineLoop.cpp:3015] [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x000000000027627b UE4Editor!GuardedMain(char16_t const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Launch/Private/Launch.cpp:127] [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79e9f54056 libUE4Editor-UnixCommonStartup.so!CommonUnixMain(int, char*, int ()(char16_t const*), void (*)()) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Unix/UnixCommonStartup/Private/UnixCommonStartup.cpp:264] [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x00007f79e9d6f0b3 libc.so.6!__libc_start_main(+0xf2) [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [Callstack] 0x000000000025f4c9 UE4Editor!_start() [2021.05.08-23.19.42:798][ 0]LogOutputDevice: Error: [2021.05.08-23.19.42:803][ 0]LogStats: SubmitErrorReport - 0.000 s [2021.05.08-23.19.42:971][ 0]LogCore: Done sending crash report for ensure(). [2021.05.08-23.19.42:973][ 0]LogStats: SendNewReport - 0.170 s [2021.05.08-23.19.42:973][ 0]LogStats: FDebug::EnsureFailed - 0.835 s [2021.05.08-23.19.43:001][ 0]LogMaterial: Display: Missing cached shader map for material BaseFlattenMaterial, compiling.

The meltdown message after it's done puking.

Assertion failed: bSuccess [File:/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanCommandBuffer.cpp] [Line: 458]

libUE4Editor-Core.so!FGenericPlatformMisc::RaiseException(unsigned int) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/GenericPlatform/GenericPlatformMisc.cpp:472] libUE4Editor-Core.so!FOutputDevice::LogfImpl(char16_t const*, ...) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/Misc/OutputDevice.cpp:61] libUE4Editor-Core.so!AssertFailedImplV(char const*, char const*, int, char16_t const*, __va_list_tag*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/Misc/AssertionMacros.cpp:104] libUE4Editor-Core.so!FDebug::CheckVerifyFailedImpl(char const*, char const*, int, char16_t const*, ...) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/Misc/AssertionMacros.cpp:458] libUE4Editor-VulkanRHI.so!FVulkanCommandBufferManager::WaitForCmdBuffer(FVulkanCmdBuffer*, float) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanCommandBuffer.cpp:458] libUE4Editor-VulkanRHI.so!FVulkanDynamicRHI::RHIGetRenderQueryResult(FRHIRenderQuery*, unsigned long long&, bool, unsigned int) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanQuery.cpp:513] libUE4Editor-RenderCore.so!MeasureLongGPUTaskExecutionTime(FRHICommandListImmediate&) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Private/LongGPUTask.cpp:89] UE4Editor!TEnqueueUniqueRenderCommandType::DoTask(ENamedThreads::Type, TRefCountPtr const&) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Public/RenderingThread.h:183] UE4Editor!TGraphTask >::ExecuteTask(TArray&, ENamedThreads::Type) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Public/Async/TaskGraphInterfaces.h:886] libUE4Editor-Core.so!FNamedTaskThread::ProcessTasksNamedThread(int, bool) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/Async/TaskGraph.cpp:709] libUE4Editor-Core.so!FNamedTaskThread::ProcessTasksUntilQuit(int) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/Async/TaskGraph.cpp:600] libUE4Editor-RenderCore.so!RenderingThreadMain(FEvent*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Private/RenderingThread.cpp:372] libUE4Editor-RenderCore.so!FRenderingThread::Run() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Private/RenderingThread.cpp:526] libUE4Editor-Core.so!FRunnableThreadPThread::Run() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.cpp:25] libUE4Editor-Core.so!FRunnableThreadPThread::_ThreadProc(void*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.h:185] libpthread.so.0!UnknownFunction(0x9608) libc.so.6!clone(+0x42)

GAAAAAAAAAAGGGHHHH!!!!!!!!!!!!!!,This is getting very frustrating. Build is UE4 v4.26.2 in Ubuntu 20.04 on ASUS A10 AMD with 16GB RAM.

The build itself goes perfectly and running "make" looks good, too. 

The first compile that happens when running ./UE4engine for the first time always crashes the same way. Along the way, it tries to compile about 5,000 shaders but still never works. 4+ hours for each build I've tried always ends in failure.

Suggested fixes that have NOT worked:

 - Anything to do with opengl4. I get the exact same failure message below with ./UE4Editor -opengl4
 - drivers for nvidia. 
 - v4.21 to 4.27 all do this same thing.
 - building from source or downloading the zipfile all fail just like this. 
 - Vulkan looks ok. I can run the vulkancube test app at it pops up and spins like it's supposed to.
 - Vulkan IDE installation didn't install any missing libraries to appease this problem.

First failure message:

Ensure condition failed: VendorId != EGpuVendorId::Unknown [File:/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanDevice.cpp] [Line: 182] 
[2021.05.08-22.50.01:732][  0]LogCore: 0x00007fdd03ba7e22 Dladdr: 0.031547ms Open: 35.277388ms Search: 13.008314ms
[2021.05.08-22.50.01:733][  0]LogCore: 0x00007fdd03c33e85 Dladdr: 0.032492ms Open: 0.026448ms Search: 1.062901ms
[2021.05.08-22.50.01:738][  0]LogCore: 0x00007fdd03c301b2 Dladdr: 0.010213ms Open: 0.007711ms Search: 5.203391ms
[2021.05.08-22.50.01:738][  0]LogCore: 0x00007fdd03c2fdc7 Dladdr: 0.034334ms Open: 0.024149ms Search: 0.031106ms
[2021.05.08-22.50.01:842][  0]LogCore: 0x00007fdd778ab41c Dladdr: 0.006708ms Open: 58.196348ms Search: 45.176067ms
[2021.05.08-22.50.01:852][  0]LogCore: 0x000000000027f332 Dladdr: 0.015054ms Open: 9.154836ms Search: 1.029153ms
[2021.05.08-22.50.01:853][  0]LogCore: 0x000000000027625b Dladdr: 0.015530ms Open: 0.024000ms Search: 0.352516ms
[2021.05.08-22.50.01:859][  0]LogCore: 0x00007fdd745a4055 Dladdr: 0.002422ms Open: 6.107851ms Search: 0.086584ms
[2021.05.08-22.50.01:859][  0]LogCore: 0x00007fdd743bf0b2 Dladdr: 0.024641ms Open: 0.274822ms Search: 0.002269ms
[2021.05.08-22.50.01:863][  0]LogCore: 0x000000000025f4c8 Dladdr: 0.014687ms Open: 0.014836ms Search: 2.965988ms
[2021.05.08-22.50.01:873][  0]LogStats: FPlatformStackWalk::StackWalkAndDump -  0.227 s
[2021.05.08-22.50.01:873][  0]LogOutputDevice: Error: === Handled ensure: ===
[2021.05.08-22.50.01:873][  0]LogOutputDevice: Error:                                                                                                                                          
[2021.05.08-22.50.01:873][  0]LogOutputDevice: Error: Ensure condition failed: VendorId != EGpuVendorId::Unknown [File:/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanDevice.cpp] [Line: 182]                                                                                                                                                                      
[2021.05.08-22.50.01:873][  0]LogOutputDevice: Error:                                                                                                                                          
[2021.05.08-22.50.01:873][  0]LogOutputDevice: Error: Stack:                                                                                                                                   
[2021.05.08-22.50.01:873][  0]LogOutputDevice: Error: [Callstack] 0x00007fdd03ba7e23 libUE4Editor-VulkanRHI.so!FVulkanDevice::FVulkanDevice(FVulkanDynamicRHI*, VkPhysicalDevice_T*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanDevice.cpp:182]                                                                                                               
[2021.05.08-22.50.01:873][  0]LogOutputDevice: Error: [Callstack] 0x00007fdd03c33e86 libUE4Editor-VulkanRHI.so!FVulkanDynamicRHI::SelectAndInitDevice() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanRHI.cpp:551]                                                                                                                                               
[2021.05.08-22.50.01:873][  0]LogOutputDevice: Error: [Callstack] 0x00007fdd03c301b3 libUE4Editor-VulkanRHI.so!FVulkanDynamicRHI::InitInstance() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanRHI.cpp:694]                                                                                                                                                      
[2021.05.08-22.50.01:873][  0]LogOutputDevice: Error: [Callstack] 0x00007fdd03c2fdc8 libUE4Editor-VulkanRHI.so!FVulkanDynamicRHI::Init() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanRHI.cpp:241]                                                                                                                                                              
[2021.05.08-22.50.01:873][  0]LogOutputDevice: Error: [Callstack] 0x00007fdd778ab41d libUE4Editor-RHI.so!RHIInit(bool) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RHI/Private/DynamicRHI.cpp:228]                                                                                                                                                                                     
[2021.05.08-22.50.01:874][  0]LogOutputDevice: Error: [Callstack] 0x000000000027f333 UE4Editor!FEngineLoop::PreInitPreStartupScreen(char16_t const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Launch/Private/LaunchEngineLoop.cpp:2555]                                                                                                                                             
[2021.05.08-22.50.01:874][  0]LogOutputDevice: Error: [Callstack] 0x000000000027625c UE4Editor!GuardedMain(char16_t const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Launch/Private/Launch.cpp:127]                                                                                                                                                                                 
[2021.05.08-22.50.01:874][  0]LogOutputDevice: Error: [Callstack] 0x00007fdd745a4056 libUE4Editor-UnixCommonStartup.so!CommonUnixMain(int, char**, int (*)(char16_t const*), void (*)()) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Unix/UnixCommonStartup/Private/UnixCommonStartup.cpp:264]                                                                                         
[2021.05.08-22.50.01:874][  0]LogOutputDevice: Error: [Callstack] 0x00007fdd743bf0b3 libc.so.6!__libc_start_main(+0xf2)                                                                        
[2021.05.08-22.50.01:874][  0]LogOutputDevice: Error: [Callstack] 0x000000000025f4c9 UE4Editor!_start()                                                                                        
[2021.05.08-22.50.01:874][  0]LogOutputDevice: Error:                                  

2nd failure message, a few minutes later.

[2021.05.08-23.19.42:797][  0]LogStats: FPlatformStackWalk::StackWalkAndDump -  0.659 s
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: === Handled ensure: ===
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error:                                                                                                                                          
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: Ensure condition failed: (ImageCreateInfo.usage & VK_IMAGE_USAGE_SAMPLED_BIT) == 0 [File:/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanTexture.cpp] [Line: 429]                                                                                                                                             
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error:                                                                                                                                          
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: Stack:                                                                                                                                   
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79856c01ef libUE4Editor-VulkanRHI.so!FVulkanSurface::GenerateImageCreateInfo(FVulkanSurface::FImageCreateInfo&, FVulkanDevice&, VkImageViewType, EPixelFormat, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int, ETextureCreateFlags, VkFormat*, VkFormat*, bool) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanTexture.cpp:429]                                                                                                                    
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79856c91da libUE4Editor-VulkanRHI.so!FindOrCalculateTexturePlatformSize(FVulkanDevice*, VkImageViewType, unsigned int, unsigned int, unsigned int, unsigned char, unsigned int, unsigned int, ETextureCreateFlags) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanTexture.cpp:2819]     
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79856c8ffb libUE4Editor-VulkanRHI.so!FVulkanDynamicRHI::RHICalcTexture2DPlatformSize(unsigned int, unsigned int, unsigned char, unsigned int, unsigned int, ETextureCreateFlags, FRHIResourceCreateInfo const&, unsigned int&) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanTexture.cpp:2840]                                                                                                                                                                                        
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f06677ea libUE4Editor-Engine.so!FTexture2DResource::CalcRequestedMipsSize() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/Rendering/Texture2DResource.cpp:164]                                                                                                                                
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f065ea2d libUE4Editor-Engine.so!FStreamableTextureResource::InitRHI() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/Rendering/StreamableTextureResource.cpp:158]                                                                                                                              
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79ed47f354 libUE4Editor-RenderCore.so!FRenderResource::InitResource() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Private/RenderResource.cpp:102]                                                                                                                                                 
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79ed47faad libUE4Editor-RenderCore.so!BeginInitResource(FRenderResource*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Private/RenderResource.cpp:155]                                                                                                                                             
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f0a41c3e libUE4Editor-Engine.so!UTexture::UpdateResource() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/Texture.cpp:165]                                                                                                                                                                     
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f0a43fb2 libUE4Editor-Engine.so!UTexture::PostLoad() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/Texture.cpp:434]                                                                                                                                                                           
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f233f499 libUE4Editor-CoreUObject.so!UObject::ConditionalPostLoad() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/Obj.cpp:1082]                                                                                                                                                  
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f00bb1e7 libUE4Editor-Engine.so!UMaterial::PostLoad() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/Materials/Material.cpp:3739]                                                                                                                                                              
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f233f499 libUE4Editor-CoreUObject.so!UObject::ConditionalPostLoad() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/Obj.cpp:1082]                                                                                                                                                  
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f249b7ab libUE4Editor-CoreUObject.so!EndLoad(FUObjectSerializeContext*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:1647]                                                                                                                                   
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f2499d0e libUE4Editor-CoreUObject.so!LoadPackageInternal(UPackage*, char16_t const*, unsigned int, FLinkerLoad*, FArchive*, FLinkerInstancingContext const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:1360]                                              
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f24972ef libUE4Editor-CoreUObject.so!LoadPackage(UPackage*, char16_t const*, unsigned int, FArchive*, FLinkerInstancingContext const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:1458]                                                                    
[2021.05.08-23.19.42:797][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f2494791 libUE4Editor-CoreUObject.so!ResolveName(UObject*&, FString&, bool, bool, unsigned int, FLinkerInstancingContext const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:787]                                                                           
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f249786c libUE4Editor-CoreUObject.so!StaticLoadObjectInternal(UClass*, UObject*, char16_t const*, char16_t const*, unsigned int, UPackageMap*, bool, FLinkerInstancingContext const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:848]                      
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f24935d2 libUE4Editor-CoreUObject.so!StaticLoadObject(UClass*, UObject*, char16_t const*, char16_t const*, unsigned int, UPackageMap*, bool, FLinkerInstancingContext const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp:924]                              
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79eb7175da libUE4Editor-UnrealEd.so!UMaterialInterface* ConstructorHelpersInternal::FindOrLoadObject(FString&, unsigned int) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Public/UObject/ConstructorHelpers.h:36]                                                             
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79eb6fab5f libUE4Editor-UnrealEd.so!ConstructorHelpers::FObjectFinder::FObjectFinder(char16_t const*, unsigned int) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Public/UObject/ConstructorHelpers.h:109]                                                                     
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79eb6b1119 libUE4Editor-UnrealEd.so!UHierarchicalLODSettings::UHierarchicalLODSettings(FObjectInitializer const&) [/home/rcd/UnrealEngine-4.26/Engine/Source/Editor/UnrealEd/Private/HierarchicalLOD.cpp:52]                                                                                                        
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f21ac934 libUE4Editor-CoreUObject.so!UClass::CreateDefaultObject() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp:3707]                                                                                                                                                 
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79eb6b17fe libUE4Editor-UnrealEd.so!FHierarchicalLODBuilder::FHierarchicalLODBuilder(UWorld*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Editor/UnrealEd/Private/HierarchicalLOD.cpp:78]                                                                                                                            
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f0cae4d9 libUE4Editor-Engine.so!UWorld::UWorld(FObjectInitializer const&) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Engine/Private/World.cpp:361]                                                                                                                                                        
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f21ac934 libUE4Editor-CoreUObject.so!UClass::CreateDefaultObject() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp:3707]                                                                                                                                                 
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79f2451c68 libUE4Editor-CoreUObject.so!ProcessNewlyLoadedUObjects(FName, bool) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectBase.cpp:996]                                                                                                                                  
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00000000002878b1 UE4Editor!FEngineLoop::PreInitPostStartupScreen(char16_t const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Launch/Private/LaunchEngineLoop.cpp:3015]                                                                                                                                            
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x000000000027627b UE4Editor!GuardedMain(char16_t const*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Launch/Private/Launch.cpp:127]                                                                                                                                                                                 
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79e9f54056 libUE4Editor-UnixCommonStartup.so!CommonUnixMain(int, char**, int (*)(char16_t const*), void (*)()) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Unix/UnixCommonStartup/Private/UnixCommonStartup.cpp:264]                                                                                         
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x00007f79e9d6f0b3 libc.so.6!__libc_start_main(+0xf2)                                                                        
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error: [Callstack] 0x000000000025f4c9 UE4Editor!_start()                                                                                        
[2021.05.08-23.19.42:798][  0]LogOutputDevice: Error:                                                                                                                                          
[2021.05.08-23.19.42:803][  0]LogStats:                SubmitErrorReport -  0.000 s                                                                                                            
[2021.05.08-23.19.42:971][  0]LogCore: Done sending crash report for ensure().
[2021.05.08-23.19.42:973][  0]LogStats:                    SendNewReport -  0.170 s
[2021.05.08-23.19.42:973][  0]LogStats:             FDebug::EnsureFailed -  0.835 s
[2021.05.08-23.19.43:001][  0]LogMaterial: Display: Missing cached shader map for material BaseFlattenMaterial, compiling. 

The meltdown message after it's done puking.

Assertion failed: bSuccess [File:/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanCommandBuffer.cpp] [Line: 458]

libUE4Editor-Core.so!FGenericPlatformMisc::RaiseException(unsigned int) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/GenericPlatform/GenericPlatformMisc.cpp:472]
libUE4Editor-Core.so!FOutputDevice::LogfImpl(char16_t const*, ...) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/Misc/OutputDevice.cpp:61]
libUE4Editor-Core.so!AssertFailedImplV(char const*, char const*, int, char16_t const*, __va_list_tag*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/Misc/AssertionMacros.cpp:104]
libUE4Editor-Core.so!FDebug::CheckVerifyFailedImpl(char const*, char const*, int, char16_t const*, ...) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/Misc/AssertionMacros.cpp:458]
libUE4Editor-VulkanRHI.so!FVulkanCommandBufferManager::WaitForCmdBuffer(FVulkanCmdBuffer*, float) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanCommandBuffer.cpp:458]
libUE4Editor-VulkanRHI.so!FVulkanDynamicRHI::RHIGetRenderQueryResult(FRHIRenderQuery*, unsigned long long&, bool, unsigned int) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/VulkanRHI/Private/VulkanQuery.cpp:513]
libUE4Editor-RenderCore.so!MeasureLongGPUTaskExecutionTime(FRHICommandListImmediate&) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Private/LongGPUTask.cpp:89]
UE4Editor!TEnqueueUniqueRenderCommandType::DoTask(ENamedThreads::Type, TRefCountPtr const&) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Public/RenderingThread.h:183]
UE4Editor!TGraphTask >::ExecuteTask(TArray >&, ENamedThreads::Type) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Public/Async/TaskGraphInterfaces.h:886]
libUE4Editor-Core.so!FNamedTaskThread::ProcessTasksNamedThread(int, bool) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/Async/TaskGraph.cpp:709]
libUE4Editor-Core.so!FNamedTaskThread::ProcessTasksUntilQuit(int) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/Async/TaskGraph.cpp:600]
libUE4Editor-RenderCore.so!RenderingThreadMain(FEvent*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Private/RenderingThread.cpp:372]
libUE4Editor-RenderCore.so!FRenderingThread::Run() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/RenderCore/Private/RenderingThread.cpp:526]
libUE4Editor-Core.so!FRunnableThreadPThread::Run() [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.cpp:25]
libUE4Editor-Core.so!FRunnableThreadPThread::_ThreadProc(void*) [/home/rcd/UnrealEngine-4.26/Engine/Source/Runtime/Core/Private/HAL/PThreadRunnableThread.h:185]
libpthread.so.0!UnknownFunction(0x9608)
libc.so.6!clone(+0x42)

GAAAAAAAAAAGGGHHHH!!!

Ensure condition failed: VendorId != EGpuVendorId::Unknown

UE4 via Vulkan can’t indentify GPU vendor which is required (for some reason), vulkan function vkGetPhysicalDeviceProperties in vendorID variable (as it return structure of device properties) return ID that UE4 don’t recognize. Make sure you have proper GPU setup on your system, you might try to check vendor ID in some vulkan info application. You could also try to run UE4 in OpenGL RHI

btw you 2nd person i see here with this problem

Thank you. OpenGL seemed to be a different bag of cats. I’m not opposed to going that route, but I’m trying to get Vulkan to work.

As stated, the vulkan install itself seems to work according to the demos and such. I didn’t find a text or configuration file that needs to be edited to make UE4 happy.

The card I’m using is an Nvidia GE210 to support 2 screens. If I use the proprietary drivers then I get all kinds of issues. Using Ubuntu’s drivers makes it happy.

Is there some more configuration to do before the compile can move forward without issues?

TIA

I seem to have the same problem. I’m running Ubuntu 21.04. I worked around the problem by unplugging the second monitor, starting the editor, then plugging it back in once the editor was up. Once the editor is up and the second mon it is plugged back in, everything seems fine. The Graphics card in my case is an NVIDIA 1660 ti. I’ve seen the behavior on 4.26.2 and 4.27.