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Driver doesn't start on Fusion APU when nVidia GPU is installed

Question asked by jackpug on Mar 9, 2012
Latest reply on Mar 10, 2012 by nou

I've created an OpenCL enabled application. It works quite well under Linux. I've then moved it to a different machine running Windows that has an older nVidia GPU as well and the GPU onboard the APU, but that was not detected. Updated to latest AMD drivers. These drivers fail to start.


Device Manager indicates that the driver fails with Error Code -42.


Below is the information from a small OpenCL utility,


num platforms: 2

version 0: OpenCL 1.1 CUDA 4.1.1


vendor: NVIDIA Corporation

num Devices: 1

version 1: OpenCL 1.1 AMD-APP (898.1)

name: AMD Accelerated Parallel Processing

vendor: Advanced Micro Devices, Inc.

num Devices: 1

Num of contexts allocated: 2

DEVICE (0): GeForce 8800 GTS

          GPU Device

              Vendor: NVIDIA Corporation

             Version: OpenCL 1.0 CUDA

          Const Size: 65536

          Param Size: 4352

         Double Size: 0

          Float Size: 1

        Compute Unit: 12

        Has Compiler: 1

        Is Available: 1

DEVICE (1): AMD A4-3300 APU with Radeon(tm) HD Graphics

          CPU Device

              Vendor: AuthenticAMD

             Version: OpenCL 1.1 AMD-APP (898.1)

          Const Size: 65536

          Param Size: 4096

         Double Size: 0

          Float Size: 4

        Compute Unit: 2

        Has Compiler: 1

        Is Available: 1


The main display is the nVidia card.


What is error code 42? Can't AMD co-exist with nVidia?