@lebonhomme said in IPEGA PG-SW002 Dual joystick on Retropie:

Is it a driver problem?

Most likely yes, you bought a gamepad that only supports a Nintendo Switch, so a separate driver is needed on Linux (which is what RetroPie is built on). If the hid_nintendo driver is not working with it, then it's probably not compatible.

Do you have a Nintendo Switch ? Any reason to choose this controller for RetroPie instead of a PC compatible controller ?