Developer Notes

Won't Fix: Issue is resolved by updating drivers

Description

Launching the editor with DX12 from a command window is crashing the engine.

Note Crash occurs on Nvidia version 376.19 and does not occur on 376.33

This is a Regression

Steps to Reproduce
  1. Update Nvidia Driver to version 376.19
  2. Go to 4.14\Engine\Binaries\Win64
  3. Open a cmd window
  4. enter UE4Editor.exe -DX12 -log
  5. Press Enter

Result: Editor Crashes

Expected Result: The editor does not crash and the project browser opens

Callstack
nvwgf2umx!<Unknown> 
nvwgf2umx!<Unknown> 
D3D12!<Unknown> 
UE4Editor_D3D12RHI!FD3D12CommandListHandle::FD3D12CommandListData::Close() d3d12commandlist.h:49 
UE4Editor_D3D12RHI!FD3D12CommandListHandle::FD3D12CommandListData::FD3D12CommandListData() d3d12commandlist.cpp:49 
UE4Editor_D3D12RHI!FD3D12CommandListHandle::Create() d3d12commandlist.cpp:26 
UE4Editor_D3D12RHI!FD3D12CommandListManager::CreateCommandListHandle() d3d12directcommandlistmanager.cpp:558 
UE4Editor_D3D12RHI!FD3D12CommandListManager::ObtainCommandList() d3d12directcommandlistmanager.cpp:227 
UE4Editor_D3D12RHI!FD3D12CommandContext::OpenCommandList() d3d12commandcontext.cpp:134 
UE4Editor_D3D12RHI!FD3D12Device::CreateCommandContexts() d3d12device.cpp:103 
UE4Editor_D3D12RHI!FD3D12Device::SetupAfterDeviceCreation() d3d12device.cpp:164 
UE4Editor_D3D12RHI!FD3D12Device::Initialize() windowsd3d12device.cpp:535 
UE4Editor_D3D12RHI!FD3D12Adapter::InitializeDevices() d3d12adapter.cpp:260 
UE4Editor_D3D12RHI!FD3D12DynamicRHI::Init() windowsd3d12device.cpp:402 
UE4Editor_RHI!RHIInit() dynamicrhi.cpp:177 
UE4Editor!FEngineLoop::PreInit() launchengineloop.cpp:1515 
UE4Editor!GuardedMain() launch.cpp:113 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 
UE4Editor!WinMain() launchwindows.cpp:202 
UE4Editor!__scrt_common_main_seh() exe_common.inl:264 
kernel32!<Unknown> 
ntdll!<Unknown>

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Won't Fix
ComponentRendering
Affects Versions4.14.2
CreatedJan 3, 2017
ResolvedJan 5, 2017
UpdatedApr 27, 2018