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OpenCL will not work if your user is not part of the group Video.

Open a terminal window by pressing Ctrl + Alt + T keys on the keyboard, then add your user to group Video:

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languagebash
sudo gpasswd -a $USER video


Restart your PC:

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languagebash
sudo reboot


Open a terminal window by pressing Ctrl + Alt + T keys on the keyboard, then execute the following commands:

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languagebash
clinfo -l

This will print all available information about all OpenCL platforms on the system and the devices they expose.

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In case the number of platforms is equal to 0 you need to install the OpenCL driver.

 

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