2017.3.0f1 reports failed external processes for generating lightmaps

Unity Engine
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1

Trying to generate lightmaps results in thousands of error messages like the ones in the small excerpt from the Editor.log below.
Is there a way to get a more verbose log on these external processes?

Failed executing external process for 'Light Transport' job.
(Filename: /home/builduser/buildslave/unity/build/Editor/Src/JobManager/JobManager.cpp Line: 544)

Failed executing external process for 'Light Transport' job.
(Filename: /home/builduser/buildslave/unity/build/Editor/Src/JobManager/JobManager.cpp Line: 544)

[00:31:17] Enlighten: Finished 775 Light Transport jobs (278,37s execute, 0,01s integrate, 248,98s wallclock)
[00:31:18] Enlighten: Finished 1 Tetrahedralize Probes job (0,06s execute, 0,00s integrate, 0,31s wallclock)
Failed executing external process for 'Create ProbeSet' job.
(Filename: /home/builduser/buildslave/unity/build/Editor/Src/JobManager/JobManager.cpp Line: 544)

Failed executing external process for 'Create ProbeSet' job.
(Filename: /home/builduser/buildslave/unity/build/Editor/Src/JobManager/JobManager.cpp Line: 544)
2

This is the state after baking lightmaps for one terrain:

3314481--257680--generate-lightmaps-errors.png
3314481--257680--generate-lightmaps-errors.png1076×391 49.5 KB

3

Are you using Mono Bleeding Edge in your project? I discovered a bug in the upstream MBE that affects Linux yesterday afternoon that would cause this issue. If you are using the new Mono, you may want to consider switching back to regular Mono for now.

(Note that this bug in MBE affects all versions of Unity to date.)

4

Thanks, switching back to the stable worked and the error messages are gone. The baking is much faster now so that bug costs a considerable part of the process performance.

5

@PJayB any timeline on when this will be fixed?

6

I’d say a couple of weeks.