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No OpenCL with latest driver updates on Ubuntu?

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  • No OpenCL with latest driver updates on Ubuntu?

    OpenCL is disabled after the latest proprietary driver update for Ubuntu 14.04 (331.113). This also occurs with the most recent 340.65 driver from XOrg Edgers. I have confirmed this with multiple PCs. Can anyone confirm this?

    Maybe related with this bug? https://bugs.launchpad.net/ubuntu/+s...1/+bug/1401350

    The Nvidia OpenCL implementation is still there (/usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1), and still properly referenced in /etc/OpenCL/vendors/nvidia.icd, but ICD loaders seem to ignore it or are unable to load it.

  • #2
    It seems CUDA is also affected:

    http://askubuntu.com/questions/56076...331-113-update

    As such, CUDA/OpenCL currently broken in Ubuntu.

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    • #3
      Installing nvidia-modprobe fixed the problem. Wonder why it's necessary for newer drivers?

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      • #4
        Originally posted by fakenmc View Post
        Installing nvidia-modprobe fixed the problem. Wonder why it's necessary for newer drivers?
        "utility to load NVIDIA kernel modules and create device nodes

        This setuid program is used to create NVIDIA Linux device files and load the
        NVIDIA kernel module, on behalf of NVIDIA Linux driver components which may
        not have sufficient privileges to perform these actions on their own."


        Probably because recent Xorg can be started without root priviledges, thanks to systemd.

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