Make sure Dolphin has permission to use the hidraw devices (by installing a udev rule): https://github.com/dolphin-emu/dolphin/blob/master/Data/51-usb-device.rules
If it still doesn't work, I suggest enabling error logging and checking if there's an error in the logs.
If it still doesn't work, I suggest enabling error logging and checking if there's an error in the logs.
