# Unreal Editor 4.12 P4 with -vulkan flag Still Crash **URL:** \ **Category:** C++\ **Tags:** unreal-engine, crash, bug-report, UE4, CPP, question\ **Created:** [May 24, 2016, 12:22pm UTC](https://forums.unrealengine.com/t/unreal-editor-4-12-p4-with-vulkan-flag-still-crash/358405 "2016-05-24T12:22:06Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Rising2014](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Rising2014](https://forums.unrealengine.com/u/Rising2014)\ **Post date:** [May 24, 2016, 12:22pm UTC](https://forums.unrealengine.com/t/unreal-editor-4-12-p4-with-vulkan-flag-still-crash/358405/1 "2016-05-24T12:22:06Z")
My computer configuration： CPU:XEON E5 2670 Chipset:X79 GPU:Geforce GTX 980 Memory:DDR3-2400 32G VulkanSDK Version:1.0.13.0 GPU Driver Version:364.91 I’m running windows 7 here, 4.12 Preview 4 compiled from source (with Vulkan SDK already installed) with a GeForce GTX 980. Normal editor runs fine, and I can preview in Vulkan PIE mode. I crash when adding the -vulkan flag. Stack is too big for the comment, so I attached a text file. Top error is: Fatal error: [File:C:\UnrealEngine-4.12.0-preview-4\Engine\Source\Runtime\VulkanRHI\Private\VulkanUtil.cpp] [Line: 444] vkCreateSwapchainKHR(Device.GetInstanceHandle(), &SwapChainInfo, nullptr, &SwapChain) failed, VkResult=-1000011001 at C:\UnrealEngine-4.12.0-preview-4\Engine\Source\Runtime\VulkanRHI\Private\VulkanSwapChain.cpp:191 with error VK\_ERROR\_VALIDATION\_FAILED\_EXT Attachment:Error Report link text ---
**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\ **Post date:** [May 25, 2016, 7:21pm UTC](https://forums.unrealengine.com/t/unreal-editor-4-12-p4-with-vulkan-flag-still-crash/358405/2 "2016-05-25T19:21:26Z")
Hello, Have you ensured to follow the steps located on the linked wiki guide? > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — ue4community.wiki! You will be able to find content from the official... ---
**Author:** ![Rising2014](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Rising2014](https://forums.unrealengine.com/u/Rising2014)\ **Post date:** [May 27, 2016, 7:38am UTC](https://forums.unrealengine.com/t/unreal-editor-4-12-p4-with-vulkan-flag-still-crash/358405/3 "2016-05-27T07:38:22Z")
I’m sure that I’m doing exactly that. Vulkan SDK Version：1.0.13.0 OS:Win7 X64 SP1 GPU Driver:368.22 UE4.12 P4 ---
**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\ **Post date:** [May 27, 2016, 2:19pm UTC](https://forums.unrealengine.com/t/unreal-editor-4-12-p4-with-vulkan-flag-still-crash/358405/4 "2016-05-27T14:19:49Z")
Can you run me through your step-by-step process that you are following to reproduce this crash? ---
**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\ **Post date:** [May 31, 2016, 2:36pm UTC](https://forums.unrealengine.com/t/unreal-editor-4-12-p4-with-vulkan-flag-still-crash/358405/5 "2016-05-31T14:36:45Z")
Hello, I am marking this topic as resolved for tracking purposes, as we have not heard from you in a few days. If this issue persists, feel free to respond to this thread. For any new issues, please create a new Answerhub topic. Have a great day ---
**Author:** ![anonymous\_user\_d4efcd70](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_d4efcd70](https://forums.unrealengine.com/u/anonymous_user_d4efcd70)\ **Post date:** [February 28, 2017, 3:38am UTC](https://forums.unrealengine.com/t/unreal-editor-4-12-p4-with-vulkan-flag-still-crash/358405/6 "2017-02-28T03:38:51Z")
I’m getting this issue as well with 4.12.5 ---
**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\ **Post date:** [February 28, 2017, 2:54pm UTC](https://forums.unrealengine.com/t/unreal-editor-4-12-p4-with-vulkan-flag-still-crash/358405/7 "2017-02-28T14:54:00Z")
There have been quite a few Vulkan-related crashes fixed since 4.12.5. I’d recommend upgrading to a later version, such as 4.14 or 4.15 and seeing if you’re getting a crash there as well. If you are, please open a new thread in the Bug Reports section and we can investigate it as a separate issue. Have a great day ---
**Author:** ![anonymous\_user\_4d259155](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_4d259155](https://forums.unrealengine.com/u/anonymous_user_4d259155)\ **Post date:** [April 4, 2017, 4:14pm UTC](https://forums.unrealengine.com/t/unreal-editor-4-12-p4-with-vulkan-flag-still-crash/358405/8 "2017-04-04T16:14:29Z")
I am getting VK\_ERROR\_VALIDATION\_FAILED\_EXT error on my GTX Titan Black after building from source with version 4.15.1, I built it with the latest Vulkan SDK. When I try to open UE4 with an RX 480 however, I get bSupportsPresent assertion failure. I am using the latest driver for my Titan but am a few revisions behind the latest for my RX 480. ---
**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\ **Post date:** [April 5, 2017, 5:00pm UTC](https://forums.unrealengine.com/t/unreal-editor-4-12-p4-with-vulkan-flag-still-crash/358405/9 "2017-04-05T17:00:41Z")
Could you please provide a detailed list of steps you followed before this crash started occurring? I’d like to attempt to reproduce it on my machine but I’ll need to ensure I follow exactly the same process you did for building the engine. Thanks