Hi everyone! I’ve installed the Unreal Engine package from the aur (5.8 currently) and spent 6 hours building it and installing it. I’ve done so since the precompiled version gave me Vulkan errors, but I haven’t solved much of anything by buillding it myself unfortunately (My CPU spent most of this time at 80C 
).
So I now come here to ask for help, and know if it’s even the right place to ask so. Thanks in advance btw.
This is my setup:
CPU: Ryzen 7 5800X
GPU: AMD RX 9070XT
Distro: CachyOS (Of course)
Desktop Enviroment: KDE Plasma on Wayland
RAM: 32 GB DDR4 3600Mhz
The Project manager starts normally, but when I create a project I see the editor like this:
And then I get this Vulkan error that crashes everything:
radv/amdgpu: The CS has been cancelled because the context is lost. This context is innocent.
\[2026.06.27-03.13.49:533\]\[ 21\]LogVulkanRHI: Error: VulkanRHI::vkQueueSubmit(Queue, InSubmitInfos.Num(), InSubmitInfos.GetData(), FenceHandle) failed, VkResult=-4
at ./Runtime/VulkanRHI/Private/VulkanQueue.cpp:486
with error VK_ERROR_DEVICE_LOST
\[2026.06.27-03.13.49:538\]\[ 21\]LogVulkanRHI: Error: Shader diagnostic messages and asserts:
Device: 0, Queue Graphics:
No shader diagnostics found for this queue.
Device: 0, Queue AsyncCompute:
No shader diagnostics found for this queue.
\[2026.06.27-03.13.49:538\]\[ 21\]LogVulkanRHI: Error:
DEVICE FAULT REPORT:
\* Description:
\* Address Info:
\* Vendor Info:
\* Vendor Binary Size: 0
\[2026.06.27-03.13.49:539\]\[ 21\]LogRHI: Error: Active GPU breadcrumbs:
Device 0, Pipeline Graphics: (In: 0x80001463, Out: 0x8000142f)
(ID: 0x800013de) \[ Active\] Frame 19
(ID: 0x800013e0) \[ Active\] SceneRender - ViewFamilies
(ID: 0x800014e2) \[ Active\] RenderGraphExecute - /ViewFamilies
(ID: 0x800013f2) \[ Active\] Scene
(ID: 0x80001463) \[ Active\] RayTracingScene
(ID: 0x80001477) \[Not Started\] StochasticLighting
(ID: 0x8000147e) \[Not Started\] VirtualShadowMapMarkPages
(ID: 0x8000147f) \[Not Started\] FVirtualShadowMapArray::BeginMarkPages
(ID: 0x80001480) \[Not Started\] ShadowDepths
(ID: 0x80001482) \[Not Started\] FVirtualShadowMapArray::BuildPageAllocation
(ID: 0x80001483) \[Not Started\] InitializePhysicalPages
(ID: 0x80001484) \[Not Started\] RenderVirtualShadowMaps(Nanite)
(ID: 0x80001487) \[Not Started\] Nanite::DrawGeometry
(ID: 0x80001488) \[Not Started\] MainPass
(ID: 0x80001489) \[Not Started\] InstanceCulling
(ID: 0x8000148a) \[Not Started\] NodeAndClusterCull
(ID: 0x8000148b) \[Not Started\] PatchSplit
(ID: 0x8000148c) \[Not Started\] BuildPreviousOccluderHZB(VSM)
(ID: 0x8000148d) \[Not Started\] PostPass
(ID: 0x8000148e) \[Not Started\] InstanceCulling
(ID: 0x8000148f) \[Not Started\] NodeAndClusterCull
(ID: 0x80001490) \[Not Started\] PatchSplit
(ID: 0x80001491) \[Not Started\] RenderVirtualShadowMaps(Non-Nanite)
(ID: 0x80001492) \[Not Started\] Batched
(ID: 0x80001493) \[Not Started\] CullingPasses
(ID: 0x80001494) \[Not Started\] FVirtualShadowMapArray::PostProcessPages
(ID: 0x80001496) \[Not Started\] RenderDeferredLighting
(ID: 0x80001498) \[Not Started\] DiffuseIndirectAndAO
(ID: 0x80001499) \[Not Started\] LumenReflections
(ID: 0x8000149a) \[Not Started\] InitTranslucencyLightingVolumeTextures
(ID: 0x8000149b) \[Not Started\] Lights
(ID: 0x8000149c) \[Not Started\] DirectLighting
(ID: 0x8000149e) \[Not Started\] UnbatchedLights
(ID: 0x8000149f) \[Not Started\] Lvl_ThirdPerson.DirectionalLight
(ID: 0x800014a0) \[Not Started\] ShadowProjectionOnOpaque
(ID: 0x800014a1) \[Not Started\] TranslucencyLightingVolume
(ID: 0x800014a2) \[Not Started\] InjectTranslucencyLightingVolume(View=0)
(ID: 0x800014a4) \[Not Started\] FilterTranslucentVolume 64x64x64 Cascades:2
(ID: 0x800014a6) \[Not Started\] RenderDeferredLighting
(ID: 0x800014a7) \[Not Started\] DiffuseIndirectAndAO
(ID: 0x800014ab) \[Not Started\] VolumetricCloud
(ID: 0x800014ac) \[Not Started\] VolCloudReconstruction
(ID: 0x800014ad) \[Not Started\] TemporalSuperResolution
(ID: 0x800014af) \[Not Started\] SkyAtmosphere
(ID: 0x800014b0) \[Not Started\] ExponentialHeightFog
(ID: 0x800014b2) \[Not Started\] VolCloudComposeOverScene
(ID: 0x800014b3) \[Not Started\] PostRenderOpsFX
(ID: 0x800014b4) \[Not Started\] FXSystemPostRenderOpaque
(ID: 0x800014e8) \[Not Started\] GPUParticles_PostRenderOpaque
(ID: 0x800014b5) \[Not Started\] Translucency
(ID: 0x800014b7) \[Not Started\] RenderTranslucency
(ID: 0x800014bf) \[Not Started\] PostProcessing
(ID: 0x800014c0) \[Not Started\] TemporalSuperResolution(sg.AntiAliasingQuality=3) 1014x550 -> 1014x550
(ID: 0x800014c1) \[Not Started\] LocalExposure
(ID: 0x800014c2) \[Not Started\] Histogram
(ID: 0x800014c3) \[Not Started\] TextureDownsampleChain
(ID: 0x800014c4) \[Not Started\] LocalExposure - Blurred Luminance
(ID: 0x800014c5) \[Not Started\] TextureDownsampleChain
(ID: 0x800014c6) \[Not Started\] Bloom
(ID: 0x800014c7) \[Not Started\] EditorSelectionOutlines
(ID: 0x800014c8) \[Not Started\] OutlineDepth 1014x550
(ID: 0x800014ca) \[Not Started\] InitializeEditorPrimitivesTextures 1014x550 MSAA=1
(ID: 0x800014cb) \[Not Started\] CompositeEditorPrimitives 1014x550 MSAA=1
(ID: 0x800014e7) \[Not Started\] RenderViewEditorPrimitives 1014x550 msaa=1
(ID: 0x800014f1) \[Not Started\] RenderViewEditorForegroundPrimitives 1014x550 msaa=1
(ID: 0x800014f2) \[Not Started\] RenderViewEditorForegroundTranslucentPrimitives 1014x550 msaa=1
(ID: 0x800014cd) \[Not Started\] VirtualTextureUpdate
(ID: 0x800014f3) \[Not Started\] RenderGraphExecute - CanvasRenderThreadScope
(ID: 0x800014f4) \[Not Started\] FRDGBuilder::SubmitBufferUploads
Device 0, Pipeline AsyncCompute: (In: 0x800014fa, Out: 0x800014fa)
(ID: 0x800013de) \[ Active\] Frame 19
(ID: 0x800013e0) \[ Finished\] SceneRender - ViewFamilies
(ID: 0x800014e2) \[ Finished\] RenderGraphExecute - /ViewFamilies
(ID: 0x800013f2) \[ Finished\] Scene
(ID: 0x8000142f) \[ Finished\] LumenSceneUpdate: 37 card captures 0.014M texels
(ID: 0x80001479) \[ Finished\] DiffuseIndirectAndAO
(ID: 0x8000147a) \[ Finished\] LumenScreenProbeGather
(ID: 0x8000147b) \[ Finished\] UpdateWorldRadianceCaches
(ID: 0x8000147c) \[ Finished\] Integrate
(ID: 0x8000147d) \[ Finished\] TranslucencyVolumeLighting
(ID: 0x800014bf) \[ Finished\] PostProcessing
(ID: 0x800014c0) \[ Finished\] TemporalSuperResolution(sg.AntiAliasingQuality=3) 1014x550 -> 1014x550
(ID: 0x800014cb) \[ Finished\] CompositeEditorPrimitives 1014x550 MSAA=1
(ID: 0x800014e7) \[ Finished\] RenderViewEditorPrimitives 1014x550 msaa=1
(ID: 0x800014f3) \[ Finished\] RenderGraphExecute - CanvasRenderThreadScope
(ID: 0x800014f9) \[ Active\] RenderGraphExecute - Slate
(ID: 0x800014fa) \[ Active\] FRDGBuilder::SubmitBufferUploads