Operating system: Windows 10
Graphics card: 2 x RTX 2080 with NVLink Bridge@ Driver 461.40
Blender Version
Broken: 2.92
Worked: not sure
Short description of error
The Blender UI freezes indefinitely when using Cycles GPU in either Viewport or Final Render when SLI is disabled in the Nvidia Driver with a Multi-GPU System and NV-Link Bridge.
Exact steps for others to reproduce the error
- Disable SLI in Nvidia Driver (required for other Softwares/Plugins for example) (see image attached)
- Use any Blender File (e.g default Cube Scene)
- Set Cycles to GPU
- Hit Render/Enable Viewport Render Mode
- Immediate Freeze - Stuck at "Updating Lookup Tables" (see images attached)
I found out that changing "Distribute Memory across devices" in Preferences does not prevent the problem. Only enabling SLI in the Driver Control Panel avoids freezing.
Please let me know if I can provide more information. Glad to help if I can.
