# How do I build lighting locally on Linux?

**URL:** <https://forums.unrealengine.com/t/how-do-i-build-lighting-locally-on-linux/2191378>\
**Category:** Platform & Builds\
**Tags:** swarm-agent, unreal-engine, editor, Lighting, question\
**Created:** [December 10, 2024, 1:29am UTC](https://forums.unrealengine.com/t/how-do-i-build-lighting-locally-on-linux/2191378 "2024-12-10T01:29:58Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Kaneda](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Kaneda](https://forums.unrealengine.com/u/Kaneda)\
**Post date:** [December 10, 2024, 1:29am UTC](https://forums.unrealengine.com/t/how-do-i-build-lighting-locally-on-linux/2191378/1 "2024-12-10T01:29:58Z")

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According to Epic’s documentation on Swarm Agent:

> Currently, Swarm Agent and Coordinator are only supported for Windows. Light builds on Mac and Linux will only build locally.

How do I build locally? If I use `Build > Build Lighting Only` or `Build > Build All Levels`, I get the error:

> Import Volumetric Lightmap failed: Expected 64 tasks, only 0 were reported as completed from Swarm"

I cant find any information about this online, chatbots just give me slop, and there are no options for Swarm Agent in Project settings or Editor settings (I believe Swarm Agent must be installed for this). I’ve tried blank projects and blank levels and get the same result.

Possibly useful info:

Editor: Linux\_Unreal\_Engine\_5.5.0 - see [https://www.unrealengine.com/en-US/linux](https://www.unrealengine.com/en-US/linux)

Lumen: Disabled

Nanite: Disabled

OS: Ubuntu 24.04

Driver Version: 535.183.01 CUDA Version: 12.2

System:  
[PCPartPicker Part List](https://pcpartpicker.com/list/qVckXR)

| Type | Item |
| --- | --- |
| **CPU** | [AMD Ryzen 5 3600XT 3.8 GHz 6-Core Processor](https://pcpartpicker.com/product/7sFKHx/amd-ryzen-5-3600xt-38-ghz-6-core-processor-100-100000281box) |
| **Memory** | [Corsair Vengeance LPX 32 GB (2 x 16 GB) DDR4-3600 CL18 Memory](https://pcpartpicker.com/product/Yg3mP6/corsair-vengeance-lpx-32-gb-2-x-16-gb-ddr4-3600-memory-cmk32gx4m2d3600c18) |
| **Memory** | [Corsair Vengeance LPX 32 GB (2 x 16 GB) DDR4-3600 CL18 Memory](https://pcpartpicker.com/product/Yg3mP6/corsair-vengeance-lpx-32-gb-2-x-16-gb-ddr4-3600-memory-cmk32gx4m2d3600c18) |
| **Video Card** | [Zotac GAMING GeForce RTX 2080 SUPER 8 GB Video Card](https://pcpartpicker.com/product/cBPgXL/zotac-geforce-rtx-2080-super-8-gb-gaming-video-card-zt-t20820f-10p) |

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**Author:** ![Kaneda](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Kaneda](https://forums.unrealengine.com/u/Kaneda)\
**Post date:** [February 1, 2025, 8:47pm UTC](https://forums.unrealengine.com/t/how-do-i-build-lighting-locally-on-linux/2191378/2 "2025-02-01T20:47:13Z")

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Where can I find this occult knowledge?

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**Author:** ![scheissegalo](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@scheissegalo](https://forums.unrealengine.com/u/scheissegalo)\
**Post date:** [August 2, 2025, 11:01pm UTC](https://forums.unrealengine.com/t/how-do-i-build-lighting-locally-on-linux/2191378/3 "2025-08-02T23:01:18Z")

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Still no solution to this one? I tested both ue 5.5.4 and 5.6.0 same issue.

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**Author:** ![mirthost](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/mirthost/32/1042467_2.png) [@mirthost](https://forums.unrealengine.com/u/mirthost)\
**Post date:** [August 17, 2025, 10:14pm UTC](https://forums.unrealengine.com/t/how-do-i-build-lighting-locally-on-linux/2191378/4 "2025-08-17T22:14:24Z")

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Lighting baking is not working in versions 5.5 and 5.6 - it has been broken. The last version where lighting baking works is 5.4.

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**Author:** ![tlaik](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@tlaik](https://forums.unrealengine.com/u/tlaik)\
**Post date:** [November 16, 2025, 12:25pm UTC](https://forums.unrealengine.com/t/how-do-i-build-lighting-locally-on-linux/2191378/5 "2025-11-16T12:25:06Z")

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Still broken in 5.7.0, nice.