May not help since I’m using mine with Dolphin (not as a lightgun) and in x86 but maybe it’ll give you something to think about.

But I had to make a file called 51-gcadapter.rules and place it in /etc/udev/rules.d. The file contains the following

SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ATTRS{idVendor}=="057e", ATTRS{idProduct}=="0337", MODE="0666" SUBSYSTEM=="hidraw", ATTRS{idVendor}=="057e", ATTRS{idProduct}=="0306", MODE="0666"

The usb device is for the GameCube controller adapter so you could ignore that. But the hidraw device is my dolphinbar which is what I had to do to get it to work with Dolphin.

Once again this was to get my wiimotes to work with Dolphin so may have absolutely nothing to do with a lightgun setup.

@Skynet85 Hello,

Are you using lr-pcsx-rearmed? I recently submitted some updates to that emulator.

Previously, the GunCon trigger, A, and B buttons were hard coded to the mouse’s left, right, and middle buttons. I switched it so that those are instead mappable via Libretro’s Gun Trigger, Gun Aux A, and Gun Aux B. I also added the Gun Reload input for button-activated offscreen shots.

Does your Wii remote rearrange the button configuration when a nunchuck is attached? You can go into the RetroArch menu and remap buttons if so and if you’re using the latest version of that emulator.

Lr-duckstation should already operate the way I described above, perhaps without the Gun Reload feature (I never tried it).

And if you’re using neither of those emulators, then I don’t know. Someone else will have to help you 😀

This is weird. New dongle arrived and inserted. No change. RetroPie not detecting, pairing or connecting anything. We're always told to disable onboard bluetooth. Just for the heck of it, I decided to ENABLE onboard bluetooth. Gee, what do you think happened? RetroPie detected the Wiimote, paired the Wiimote and connected the Wiimote. Tried a few reboots to make sure everything continued working and all is fine. If anyone has an explanation for that, I'd love to hear it. I'm just happy I can play Wii games again!