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Crash Bug: Adjusting the Energy of a Sun Light crashes Blender 2.8
Closed, ResolvedPublic


System Information
Windows 7 Pro 64-bit SP1

Blender Version
Broken: Blender 2.8 Dated 2018-07-09 22:47 Hash 1112f49

Short description of error

Blender "goes away" when adjusting the Energy value of a Sun Light.

Exact steps for others to reproduce the error

New scene. Add Cube. Add Sun Light. Enable EEVEE (full render mode) Move Sun to the side and use yellow aiming-dot to aim it at the cube. In the Light's information panel, adjust the Energy by Left-Clicking and dragging in the value box.

Alternately, open the attached scene, Select the light, go to the information panel and adjust the light Energy value.



Event Timeline

Bastien Montagne (mont29) triaged this task as Needs Information from User priority.

Cannot reproduce any crash here (debian64 testing, intel GPU). Please:

  • Give us your exact Blender, OS and GPU (including drivers) versions, as requested in the template!
  • Ensure both your OS and drivers are fully up-to-date (and use official GPU drivers, not those provided by windows or tablet/laptop maker or open source ones in linux distributions).
  • Try to start Blender in factory settings (--factory-startup commandline option) (this will ensure whether this is a userpref or addon issue or not).
  • Try to tweak OGL settings in UserPreferences, System tab.
  • Try to tweak your GPU driver settings (e.g. try different values between 'performance' and 'quality' if you have such slider, etc.).
  • Attach as text file here the report generated by Help -> System Info (do not paste it directly in comment).
  • Try to place this dll next to your blender.exe (software OGL, will be slow, but will show whether this is a driver issue or not).

Appologies for not including the graphics card with the report.

Blender 2.8 dated 2018-07-10 Hash 17bc056 Settings at Factory Defaults

Video Card: Nvidia GTX 980 Ti 6GB Driver is Nvidia 398.36

Windows 7 x64 SP1 - Intel CPU

Attempted to use the OpenGL32.dll as instructed, but Blender would not start - would throw an error (see video)

The crash is repeatable - every time for me. Sometimes, it happens almost instantly, other times it takes a bit of fiddling with the Energy setting to get it to happen. I've run GPU-z to monitor VRAM memory use and it *looks* like it might be a memory leak. I've tried it on a different computer with similar, but not identical specs (intel CPU and Nvidia video card - but different models)

. I've tried it with an old Nvidia driver and the most current Nvidia driver - on both systems I can get Blender to just "disappear" within a minute or less.

I uploaded a video of what I'm seeing here:

Bastien Montagne (mont29) raised the priority of this task from Needs Information from User to Normal.

yeah, sorry for the opengl software render, unfortunately that trick does not work with 2.8, it needs modern OGL :(

@Clément Foucault (fclem) mind checking on that one? Thanks.

Clément Foucault (fclem) closed this task as Resolved.Jul 31 2018, 6:36 PM

@Joe Williamsen (jwilliamsen) I fixed that bug some time ago. Closing but feel free to reopen if it still happen on your system.