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Dualshock 2 wireless controller support still not working after 3 or more years 
Dualshock 2 wireless controller support still not working after 3 or more years
Hey there @o_RESO_o
Just to clarify the controller model you are trying to use, it is an official wireless version of a PlayStation 2 controller, correct? Unfortunately, those are not officially supported so you may need to install firmware manually like @Mr-T-Magnum has suggested. You can also try using Steam Big Picture mode to force controller support to work. If you can clarify the exact model of controller you're using, I can provide some direct guidance on how to do that.