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Thank you, I'm glad you like it! I'm not exactly sure what you mean since I'm not a Linux user myself. However, in short, I don't have direct control over the input - I can only see what comes through Unity's input manager (I use Unity for development). Therefore any device needs to be correctly recognized by the Unity input manager to work.

Thank you for answer. I found how to add device to Unity project, but not sure,  if it help someone except me. May be simpler to fix joystick.

Just changed PID on working device to 28db (Keyboard), and ... It still working 
Problem not in PID, will look further...