7.5.1.1

20 April 2026

Arnold 7.5.1.1 is a bug-fix release. For the full list of features, bug fixes, and incompatible changes in Arnold 7.5.1.0, see the Arnold 7.5.1.0 release notes.

Bug Fixes

• ARNOLD-14348 - Fixed random crash while rendering on ARM64 machines

• ARNOLD-17656 - Fixed a hang when replacing a shader that was connected to a light

• ARNOLD-17660 - AiProceduralViewport crashes with implicit nodes

• usd#2607 - Updating light shaders interactively hangs the render

• usd#2613 - Missing clip files and UDIMs from search path when collecting scene assets

• usd#2615 - Export material bindings for volume nodes in the volume context

• usd#2589 - Implement scene index dependencies when materials get added or removed

• usd#2582 - Arnold-disabled nodes should not be authored to USD

• usd#2433 - Support interactive changes of shaders connected to quad lights

• usd#2611 - Support exporting geometries that get added during a sequence

System Requirements

• Windows 10 or later, with the Visual Studio 2019 redistributable.
• Linux with at least glibc 2.28. This is equivalent to RHEL/Rocky 8.
• macOS 12 or later.
• x86-64 CPUs need to support the SSE4.1 instruction set. Apple Mac models with M-series chips are natively supported.
• GPU rendering and OptiX denoising work on Windows and Linux only, and require an NVIDIA GPU with the Maxwell architecture or later.
  • On Linux, we recommend 590.48 or higher drivers.
  • On Windows, we recommend 591.28 or higher drivers.
• Intel OIDN runs on all CPUs. GPU support is limited to:
  • macOS
    • Apple silicon GPUs (M1 and newer)
  • Linux
    • NVIDIA GPUs with Turing, Ampere, Ada Lovelace, Hopper, and Blackwell architectures
  • Windows
    • Intel Xe and Intel Arc dedicated and integrated GPUs
    • NVIDIA GPUs with Turing, Ampere, Ada Lovelace, Hopper, and Blackwell architectures
    • AMD GPUs with RDNA 2, RDNA 3, RDNA 3.5, and RDNA 4 architectures