Hi there !
Operating system: Linux-5.4.0-7642-generic-x86_64-with-debian-bullseye-sid 64 Bits
Graphics card: GeForce GTX 1050 Ti with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 440.100
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-03 20:57, hash: rBa96283ba511d
Worked: (newest version of Blender that worked as expected)
Short description of error
The option to choose the Viewport Denoiser in the Render Properties shows Optix in the dropdown menu, even though the Cycles Render Device in the System Preferences in set to "None" or "CUDA". Choosing the Optix Viewport Denoiser and going to Rendered mode crashes Blender
Exact steps for others to reproduce the error
- Start Blender with defaults (Cycles Render Device to None or CUDA).
- In the Render Properties editor, change the Engine to Cycles.
- In the Denoising Sampling panel, activate the Viewport Denoiser. Automatic will be chosen.
- Change the Viewport Shading to Rendered to be welcomed by a crash
Note that the crash occurs also when the Device in the Render Properties panel is set to GPU Compute.
Note that a Cycles Render Device to Optix and the Device to GPU Compute does not crash for me when choosing the Optix Denoiser in the Rendered Viewport Shading (as it should be hopefully).