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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    Unable to set UIO Trackball as default control for trackball games

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    trackballsretroarchsave config
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    • H
      hopwon
      last edited by

      RPi4, RP4.8
      Ultimarc I-Pac Ultimate IO controller

      Example - Missile Command.
      Every time I need to set the mouse index to Ultimarc Ultimate IO and it works fine.
      I am unable to save the config. "Error Saving Profile"

      Rather than troubleshoot all of this, can I just not hardcode the mouse index in retroarch.cfg for the core/game?
      Anyone seen this before?

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      • H
        hopwon
        last edited by

        I found the Mouse event for the trackball is 3, I think...

        /dev/input/event3: Ultimarc I-PAC Ultimate I/O

        Is it a simple matter of mapping (player1) mouse_index to 3?

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        • H
          hopwon
          last edited by

          Updated ...all/retroarch.cfg to reflect:

          input_player1_mouse_index = "3"
input_player2_mouse_index = "3"

          ...and BOOM! It worked.

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