https://bugs.kde.org/show_bug.cgi?id=407921

            Bug ID: 407921
           Summary: LUT management with defined OCIO doesn't work on Linux
           Product: krita
           Version: 4.2.0-beta
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: HDR
          Assignee: krita-bugs-n...@kde.org
          Reporter: iszo...@gmail.com
  Target Milestone: ---

SUMMARY
Blender OCIO doesn't work with Linux, I tried with Windows 10 and it's working
as expected,  when you change the settings in linux it throws this error in the
console 

Error The specified transform file
'/home/voltam/Downloads/blender-2.79b-linux-glibc219-x86_64/2.79/datafiles/colormanagement/luts/srgb_inv.spi1d'
could not be loaded. Invalid 'From' Tag sending event 3 to object
qt_scrollarea_viewport

I tried with blender 2.80's OCIO file and the same happens

STEPS TO REPRODUCE
1. Open an OpenEXR file made with blender
2. Enable OpenColorIO, set color engine to OCIO, set the configuration to
blender's OCIO, in blender's installation folder.
3. To get a standard color, set input ColorSpace to Linear, Display device to
sRGB, view to default and look to none, this works in windows but in linux not.

OBSERVED RESULT

A defined OCIO is not working in linux

EXPECTED RESULT

Change the color from linear gamma to corrected gamma (without setting the
gamma in the LUT docker) in linux.

Krita

 Version: 4.2.0-beta
 Languages: en_US
 Hidpi: true

Qt

  Version (compiled): 5.9.5
  Version (loaded): 5.9.5

OS Information

  Build ABI: x86_64-little_endian-lp64
  Build CPU: x86_64
  CPU: x86_64
  Kernel Type: linux
  Kernel Version: 4.15.0-50-generic
  Pretty Productname: Ubuntu 18.04.2 LTS
  Product Type: ubuntu
  Product Version: 18.04


Hardware Information

  GPU Acceleration: auto
  Memory: 32164 Mb
  Number of Cores: 16
  Swap Location: /tmp

OpenGL Info

  Vendor:  "X.Org" 
  Renderer:  "Radeon RX Vega (VEGA10, DRM 3.31.0, 4.15.0-50-generic, LLVM
9.0.0)" 
  Version:  "4.5 (Compatibility Profile) Mesa 19.1.0-devel - padoka PPA" 
  Shading language:  "4.50" 
  Requested format:  QSurfaceFormat(version 3.0, options
QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24,
redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8,
stencilBufferSize 8, samples -1, swapBehavior
QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, profile 
QSurfaceFormat::OpenGLContextProfile(CompatibilityProfile)) 
  Current format:    QSurfaceFormat(version 4.5, options
QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24,
redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8,
stencilBufferSize 8, samples -1, swapBehavior
QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, profile 
QSurfaceFormat::OpenGLContextProfile(CompatibilityProfile)) 
     Version: 4.5
     Supports deprecated functions true 
     is OpenGL ES: false 

QPA OpenGL Detection Info 
  supportsDesktopGL: true 
  supportsOpenGLES: true 
  isQtPreferOpenGLES: false 
== log ==
 Supported renderers: QFlags(0x2|0x4) 
Surface format preference list: 
* QSurfaceFormat(version 3.0, options
QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24,
redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8,
stencilBufferSize 8, samples -1, swapBehavior
QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, profile 
QSurfaceFormat::OpenGLContextProfile(CompatibilityProfile)) 
    QSurfaceFormat::RenderableType(OpenGL) 
* QSurfaceFormat(version 3.0, options
QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24,
redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8,
stencilBufferSize 8, samples -1, swapBehavior
QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, profile 
QSurfaceFormat::OpenGLContextProfile(CompatibilityProfile)) 
    QSurfaceFormat::RenderableType(OpenGLES) 
Probing format... QSurfaceFormat::RenderableType(OpenGL) 
Found format: QSurfaceFormat(version 3.0, options
QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24,
redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8,
stencilBufferSize 8, samples -1, swapBehavior
QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, profile 
QSurfaceFormat::OpenGLContextProfile(CompatibilityProfile)) 
    QSurfaceFormat::RenderableType(OpenGL)

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