Regular crash on 4.17.1 after VR Preview

Development Platform & Builds
, , ,
1

I am experiencing a regular crash in 4.17.1 after a VR Preview. Once I exit the preview mode with ESC and go back to the editor, the first item I try to edit in a Blueprint causes an immediate crash of the editor. I have already submitted many log files and it keeps repeating in a regular and predictable way. I am using the Oculus Rift. Happy to share more details to help identify the root cause.

2

Hello vr_marco,

I have a few questions for you that will help narrow down what issue it is that you are experiencing.

Quick questions:

  1. Can you reproduce this issue in a clean project?
  2. If so, could you provide a detailed list of steps to reproduce this issue on our end?
  3. Could you provide screen shots of any settings/blueprints that may be involved?
  4. Could you provide your complete callstack (including machine ID)?
3

Looks like rolling back the GeForce driver to root 382 (382.53) from the current 385.41 has solved all instability problems and crashes, but I will continue to work on my project and confirm back.

EDIT: no, the editor keeps crashing also with the old driver. Same issue as before.

Machine ID: E98976CC4FF0F934BF9FF0A7191DE593

Layout="Document : 1" Label="Event Graph" Content=SGraphEditor
Fatal error: [File:D:\Build++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Util.cpp] [Line: 327] SwapChain->ResizeBuffers(1,SizeX,SizeY,RenderTargetFormat,DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH) failed at D:\Build++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Viewport.cpp:220 with error DXGI_ERROR_INVALID_CALL, Size=738x189 Format=DXGI_FORMAT_R10G10B10A2_UNORM(0x00000018)

4

After doing some digging I was able to find that this is a known issue and I have provided a link to the public tracker below. We are still trying to find a set of reproduction steps as of this post (9/11/2017). If you could provide a detailed list of steps that will lead to this crash in a blank project please provide more information. Feel free to use the link provided for future updates.

Link: Unreal Engine Issues and Bug Tracker (UE-47762)

Make it a great day

5

I am also experiencing this issue. It is severely affecting a few of my production projects. Same callstack as listed in the linked issue.

6

Is you graphic card driver up to date? Any chance you have other programs running which could conflict with DirectX?

7

I have uninstalled Asus Sonic Suite 2 and all related components and I no longer have crashes.