# UE5 Auto generate uv Lightmapping doesn't work

**URL:** <https://forums.unrealengine.com/t/ue5-auto-generate-uv-lightmapping-doesnt-work/488924>\
**Category:** Rendering\
**Tags:** uv, unreal-engine, UE5-0, Lightmap, question\
**Created:** [September 17, 2021, 1:12pm UTC](https://forums.unrealengine.com/t/ue5-auto-generate-uv-lightmapping-doesnt-work/488924 "2021-09-17T13:12:12Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Lorikaluni](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/lorikaluni/32/88717_2.png) [@Lorikaluni](https://forums.unrealengine.com/u/Lorikaluni)\
**Post date:** [September 17, 2021, 1:12pm UTC](https://forums.unrealengine.com/t/ue5-auto-generate-uv-lightmapping-doesnt-work/488924/1 "2021-09-17T13:12:12Z")

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Hi there,  
I have imported a few meshes as dea format, but it doesn’t generate a uv lightmap.  
Its really small but i dont think that is the problem.  
Im using ue5.

 ![348899-screenshot-2.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/4/d/d4d7b9a37eef490e08f3739501576f3d08d73aef.jpeg)

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**Author:** ![ClockworkOcean](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/clockworkocean/32/1169999_2.png) [@ClockworkOcean](https://forums.unrealengine.com/u/ClockworkOcean)\
**Post date:** [September 18, 2021, 7:36am UTC](https://forums.unrealengine.com/t/ue5-auto-generate-uv-lightmapping-doesnt-work/488924/2 "2021-09-18T07:36:36Z")

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The lightmap should look roughly like the UVs. Do you have UVs in channel 0?

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<div class="post-metadata">

**Author:** ![Lorikaluni](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/lorikaluni/32/88717_2.png) [@Lorikaluni](https://forums.unrealengine.com/u/Lorikaluni)\
**Post date:** [September 18, 2021, 7:36pm UTC](https://forums.unrealengine.com/t/ue5-auto-generate-uv-lightmapping-doesnt-work/488924/3 "2021-09-18T19:36:55Z")

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No i dont have UVs at all…

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<div class="post-metadata">

**Author:** ![Lorikaluni](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/lorikaluni/32/88717_2.png) [@Lorikaluni](https://forums.unrealengine.com/u/Lorikaluni)\
**Post date:** [September 22, 2021, 6:13pm UTC](https://forums.unrealengine.com/t/ue5-auto-generate-uv-lightmapping-doesnt-work/488924/4 "2021-09-22T18:13:48Z")

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I fixed it.  
You have to activate the Modelling Editing Plugin. Then select your mesh in the mode of the Plugin scroll down and then go to uvs and click unwrapp.  
Now you have uvs

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**Author:** ![LEN\_XIE](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@LEN\_XIE](https://forums.unrealengine.com/u/LEN_XIE)\
**Post date:** [November 28, 2024, 1:22am UTC](https://forums.unrealengine.com/t/ue5-auto-generate-uv-lightmapping-doesnt-work/488924/5 "2024-11-28T01:22:36Z")

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no, how is manually add uv fixing auto lightmap uv generation, how is this solution