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[ML <1039684@xxxxxxxxxxxxxxxxxx>]

Same for 14.04 and driver 340.93. Is there a solution?

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https://bugs.launchpad.net/bugs/1039684

Title:
  nvidia.icd file is not present in nvidia-current 64bits. Fail to load
  opencl (like darktable)

Status in darktable:
  Confirmed
Status in Nvidia:
  New
Status in nvidia-graphics-drivers-319-updates package in Ubuntu:
  Confirmed

Bug description:
  Under Ubuntu 12.04 precise pangolin, I'm unable to load darktable with
  opencl with an optimus nvidia graphic card.

  I've got this error : 
  $ optirun darktable -d opencl
  [opencl_init] trying to load opencl library: ”
  [opencl_init] opencl library ‘libOpenCL’ found on your system and loaded
  [opencl_init] could not get platforms: -1001
  [opencl_init] FINALLY: opencl is NOT AVAILABLE on this system.
  [opencl_init] initial status of opencl enabled flag is OFF.

  To solve the problem I have to create a file : nvidia.icd in
  /etc/OpenCL/vendors/ with the only content being libcuda.so

  After that I got it working.

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