UE - Freezing / Crashing on Arch Linux

Development Getting Started & Setup
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1

BASE : Arch Linux
KERNEL : 7.1.0-1-mainline
DRIVERS : Mesa 26.2.0-devel

GPU : RX 9070
RAM : 32GB 6400MHZ
CPU : R5 9600x

INFO

I downloaded Unreal Engine from https://www.unrealengine.com/linux and tested 5.7.4 / 5.8.0 Preview and 5.8.0.
I open the engine via konsole, and also tried just executing it straight.
Screen-recording and Logs are attached to my comment under.

ISSUE / PROBLEM

The Editor is causing the whole system to stutter it feels unresponsive
Mouse cursor will stop during movement and then flick to intended destination.

On Wayland, Unreal Engine crashes 100% of the time when I click “Select Project to Open”.

On X11, the editor will open and I can sometimes access menus such as the Plugins panel, but it eventually freezes. Pressing Play causes an immediate freeze every time.

Fixes I attempted :

  • Updating Mesa (Tested with Stable & Bleeding Edge)
  • Updating Kernel
  • SDL_VIDEODRIVER=x11 in wayland / or running x11native
  • RADV_DEBUG=hang as mentioned in Unreal Engine 5.6 Freezes on linux
  • Vulkan RHI & DX12 RHI
  • Disabling RayTracing / Lumen / Nanite and other
  • Opening a Blank Project and or No startup map
  • Tried Cinnamon & XFCE & KDE, same issue on all 3

Status
NOT FIXED as of 25/6/2026

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Hey Nick. It is hard to say without any logs. Could you supply potentially the end of your log, it should contain a call stack. Or any notable errors.

3

If you start UnrealEditor with attached debugger 32 GB ram is too low. Add some swap. I am using 32 GB ram and 32 GB swap. Run htop and check memory usage.

If you just want to use the editor on wayland, you can do SDL_VIDEODRIVER=x11 /path/to/UnrealEditor

This works for me on arch linux hyprland with AMD Radeon RX 7700XT

Also add some logs they are under Saved/Logs in your project

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image2559×1231 583 KB

After being open for a couple of seconds, I start getting strong hitches. I can’t really do anything in the editor because it becomes very unresponsive. The mouse will stop responding for a moment and then suddenly jump to where I moved it. After a while, the editor just freezes completely, and clicking on anything does nothing. There isn’t even any indication that it has frozen.

Here is the log from the console (most of it)

konsole_log.txt (125.3 KB)

I have opened it via SDL_VIDEODRIVER=x11 ./UnrealEditor

It doesn’t seem to be an RAM issue as it barely uses 4-6GB

Edit: Included Video


EDIT_2: Included Project Log

MyProject.log (223.2 KB)
The final Shutdown/Exit was caused by me as I tried closing it so there is actually no error about it crashing or anything.

EDIT_3: I also tried using RADV_DEBUG=hang as mentioned in Unreal Engine 5.6 Freezes on linux
and that had 0 effect or change on my issue.