Package Details: unreal-engine 5.7.4-1

Git Clone URL: https://aur.archlinux.org/unreal-engine.git (read-only, click to copy)
Package Base: unreal-engine
Description: A 3D game engine by Epic Games which can be used non-commercially for free.
Upstream URL: https://www.unrealengine.com/
Keywords: 3D engine game ue5 Unreal
Licenses: GPL3, custom:UnrealEngine
Submitter: acerix
Maintainer: alexbelm48
Last Packager: alexbelm48
Votes: 74
Popularity: 0.196654
First Submitted: 2016-05-01 18:37 (UTC)
Last Updated: 2026-03-29 03:16 (UTC)

Pinned Comments

alexbelm48 commented on 2026-03-28 22:40 (UTC) (edited on 2026-05-16 08:26 (UTC) by alexbelm48)

I currently recommend building 5.6.1 over any version of 5.7 as this branch holds a notoriously broken Vulkan RHI implementation, leading to unexpected VK_ERROR_DEVICE_LOST crashes due to a race condition. Just modify pkgver on your end with the aformentioned version and you should be good to go.

A discussion here goes into detail about the issue, but no proper fix is currently planned by Epic.

A merge request has also been proposed here, but the fix itself was in the end apparently not very effective.

The Vulkan crashes were recently fixed in 5.8, check here.

You can still try on your own if you still insist on using 5.7.x, especially if you're motivated to fix this issue on your side. If so, don't hesitate to send a comment with your patch, I could add you as a contributor to this package if you are interested.

Reducing crashes can be done by doing the following two steps:

  • Add these lines in DefaultEngine.ini (either in your project or the editor's installation dir, /opt/unreal-engine/Engine/Config/DefaultEngine.ini by default)
[/Script/Engine.RendererSettings]
r.Vulkan.WaitForIdleOnSubmit=1
r.Vulkan.EnablePipelineLRUCache=1
  • Add these two lines as well in the editor's ConsoleVariables.ini file (/opt/unreal-engine/Engine/Config/ConsoleVariables.ini by default):
Slate.EnableToolTips=0
Slate.bAllowNotifications=0

alexbelm48 commented on 2026-03-20 16:42 (UTC) (edited on 2026-03-28 23:25 (UTC) by alexbelm48)

Do note that using Wayland for Unreal Engine is currently not recommended as half of the UI interactions are broken. This is due to a recent upgrade to SDL3 which defaults the use of Wayland protocols over X11 when launching on a Wayland-based session.

You can work around this (or at least improve your experience) while still being on Wayland by opening a separate Xorg windowed server:

export DISPLAY=:1

Xwayland ${DISPLAY} -decorate -geometry 1920x1080 &
kwin_x11 &
unreal-engine

You can, of course, replace kwin_x11 with your desktop environment window manager (GNOME is mutter for example).

Neko-san commented on 2022-11-01 02:32 (UTC) (edited on 2023-06-25 01:19 (UTC) by Neko-san)

@juancarlospaco this is easily done on your own system, not in a PKGBUILD, given that building packages runs as root:

sudo groupadd unrealengine-users
sudo usermod -aG unrealengine-users (your-username)
sudo chown -R root:unrealengine-users /opt/unreal-engine
sudo chmod -R 775 /opt/unreal-engine

Permission issues like this are already mentioned on the UE Arch wiki page: https://wiki.archlinux.org/title/Unreal_Engine_4#Installing_from_the_AUR

This is a user system problem; I already did what I could without needing users to do the above by giving the 777 permissions. If it still gives you trouble, you'll have to use the example to solve it or change the install location to somewhere you have user permissions by default (as I cannot do this for you).

Latest Comments

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Neko-san commented on 2022-11-21 08:42 (UTC)

Fixed

kerm commented on 2022-11-21 08:38 (UTC)

Getting the following error:

install: cannot stat 'GenerateProjectFiles.sh': No such file or directory
==> ERROR: A failure occurred in package().
    Aborting...
 -> error making: unreal-engine

Neko-san commented on 2022-11-20 20:33 (UTC)

@cooltic I did make a slight mistake with something in the .sh bash script but that should(?) be unrelated to the issue you're having

I'm about to update that in a minute, but that script is supposed to be edited towards the end of package() function in the PKGBUILD, so if you're still trying to avoid a rebuild, that's the reason why it's probably not picking out a correct location

coolitic commented on 2022-11-20 20:02 (UTC) (edited on 2022-11-20 20:02 (UTC) by coolitic)

I had another error where it couldn't find one of the .sh files, forgot which one, but I am sure this folder should not exist w/ this structure: /run/media/username/SE800/sources/aur/unreal-engine/pkg/unreal-engine/opt/unreal-engine/run/media/username/SE800/sources/aur/unreal-engine/src/unreal-engine/

Seems like it's incorrectly using an absolute path or something.

fhajji commented on 2022-11-19 22:42 (UTC) (edited on 2022-11-19 22:42 (UTC) by fhajji)

Thank you for your hard work @Neko-san. Currently running Engine/Binaries/Linux/UnrealEditor just fine from the build directory until everything is fixed.

Neko-san commented on 2022-11-19 21:49 (UTC)

Got it; fixed

coolitic commented on 2022-11-19 21:37 (UTC)

Also, the else block on line 127 always gives this error, requiring me to either skip prepare() or reclone the package on any failures:

fatal: invalid refspec 'refs/tags/@{upstream}:refs/tags/@{upstream}'
==> ERROR: A failure occurred in prepare().
    Aborting...

Neko-san commented on 2022-11-19 18:44 (UTC)

Ia always hated that mv behaves that way and I forget that it throws a fit in this exact circumstance every time

I'm pushing a fix for this right now; this time I'm looping for directories and moving them more carefully to avoid that problem

coolitic commented on 2022-11-19 12:50 (UTC)

Recompiled, got this:

mv: cannot move 'LocalBuilds/Engine/Linux/FeaturePacks' to '/run/media/milan/SE800/sources/aur/unreal-engine/pkg/unreal-engine/opt/unreal-engine/FeaturePacks': Directory not empty
mv: cannot move 'LocalBuilds/Engine/Linux/Samples' to '/run/media/milan/SE800/sources/aur/unreal-engine/pkg/unreal-engine/opt/unreal-engine/Samples': Directory not empty
mv: cannot move 'LocalBuilds/Engine/Linux/Templates' to '/run/media/milan/SE800/sources/aur/unreal-engine/pkg/unreal-engine/opt/unreal-engine/Templates': Directory not empty

Neko-san commented on 2022-11-19 01:03 (UTC) (edited on 2022-11-19 01:05 (UTC) by Neko-san)

LocalBuilds/Engine/Linux/ used to be generated by the UE build system for containing the compiled binaries...

If it's not there, I don't know what it is we're supposed to be packaging in 5.1, so this is kind of serious (unless you moved the build somewhere)

Try running: find src/unreal-engine -type f -iname 'UnrealEditor'

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