OTOY Forums

Hello all,

we are having a weird problem in Octane Blender. Tried reinstalling, tried different drivers, etc.
This is the issue:

Which OctaneRender version are you using?
Custom build or addon version?
Which NVIDIA drivers?
In which case are you getting this error?

So basically we tried with a lot of different Octane Blender Versions, a lot of different drivers for nvidia gpu.
Seems like after fresh install of windows something happens in the d3d11.dll while using octane blender and then it never powers up. We need to do again a fresh install of win.
Any solution is welcomed.

Are you installing the Studio Version of the NVIDIA drivers?
By the way, this looks more like a general system problem, not a specific Octane for Belnder issue.
Please try to download and execute OTOY's OctaneBench and let us know if it works fine:
https://render.otoy.com/octanebench/
Use the 2020.1 version.

So we did track down the issue, and found a workaround of some sort.
We did try both Studio and Game drivers from nvidia, it was not about that.

So we have RTX3080Ti and RTX3090 in that machine, it seems that Windows somehow decides to run OpenGL when running blender on one of those 2 cards. When we get that error we can see it is stating problem with 3090, then we just force run OpenGL on 3080Ti and it work without any problems. After a while when it states the same problem with 3080Ti we just force run OpenGL on 3090 and it works fine. My guess is that something is messing up with the drivers between windows/octane/blender and not releasing the d3d11 or something for octane to use.

Hope this helps someone.