Error message on Unreal Engine 5.5 and Linux Mint after shut down

Development Getting Started & Setup
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1

I’m using UE5.5 on Linux Mint with no problems so far, but when I shut down my machine after having saved all of my files, the window closes and then after a second or two, I get the following error message:
Assertion failed: UsedStagingBuffers.Num() == 0 [File:./Runtime/VulkanRHI/Private/VulkanMemory.cpp] [Line: 4305]

libUnrealEditor-VulkanRHI.so!VulkanRHI::FStagingManager::Deinit() [/mnt/horde/++UE5/Sync/Engine/Source/./Runtime/VulkanRHI/Private/VulkanMemory.cpp:4305]

libUnrealEditor-VulkanRHI.so!FVulkanDevice::Destroy() [/mnt/horde/++UE5/Sync/Engine/Source/./Runtime/VulkanRHI/Private/VulkanDevice.cpp:1366]

libUnrealEditor-VulkanRHI.so!FVulkanDynamicRHI::Shutdown() [/mnt/horde/++UE5/Sync/Engine/Source/./Runtime/VulkanRHI/Private/VulkanRHI.cpp:647]

libUnrealEditor-RHI.so!RHIExit() [/mnt/horde/++UE5/Sync/Engine/Source/./Runtime/RHI/Private/DynamicRHI.cpp:434]

UnrealEditor!FEngineLoop::Exit() [/mnt/horde/++UE5/Sync/Engine/Source/./Runtime/Launch/Private/LaunchEngineLoop.cpp:5216]

UnrealEditor!GuardedMain(char16_t const*) [/mnt/horde/++UE5/Sync/Engine/Source/./Runtime/Launch/Private/Launch.cpp:80]

libUnrealEditor-UnixCommonStartup.so!CommonUnixMain(int, char**, int ()(char16_t const), void (*)()) [/mnt/horde/++UE5/Sync/Engine/Source/./Runtime/Unix/UnixCommonStartup/Private/UnixCommonStartup.cpp:323]

libc.so.6!UnknownFunction(0x29d8f)

libc.so.6!__libc_start_main(+0x7f)

UnrealEditor!_start(+0x29)

Any idea what is going on here?
I didn’t have this issue with UE 5.0 and 5.4.
Linux Mint is up-to-date (21.3 Cinnamon), latest kernel.
Graphics Card is Gigabyte GeForce RTX 4070 Super 12GB
64GB system memory
Intel Xeon E-2176G CPU

2

Hello there @WhereToBuyIt!

Checking your provided log, the main errors here should be:

Assertion failed: UsedStagingBuffers.Num() == 0 [File:./Runtime/VulkanRHI/Private/VulkanMemory.cpp] [Line: 4305]
libUnrealEditor-VulkanRHI.so!VulkanRHI::FStagingManager::Deinit()

From what I could gather around the community, this kind of issue is tied to the graphics buffer, suggesting a driver conflict. Please make sure you are usinge the latest, stable version of NVIDIA drivers for Vulkan stability. Additionally, check for any updates or hotfixes deployed for Linux Mint.

3

Hi brs-sebascova (and community). I apologize for the late response, I didn’t realize there would be a response so quickly. Although I did download the latest drivers from Nvidia’s website, the preferred method is to go through the Linux Distro’s depository. And there’s the problem. I am getting repeated error messages (which I won’t go into here- specifically a Linux issue) that I have to solve/work around before I can upgrade. Hopefully I will have this solved and get back to you all regarding the original issue of the error message after shutdown. To be continued…