@welcome I bet you have the chengdao ps3 controllers from Amazon.

I am having the same issue.

@ogaspard

https://retropie.org.uk/forum/topic/3/read-this-first

Power supply?

So, oddly, I figured out how to make it work. Not sure why though.
So for starters, it started working again yesterday (when I made the post), but I didn't know how. Regardless, today it stopped working again.

However, it was fixed quite simply. I plugged it into my PC, and then plugged it back into my Pi. Now it works fine again. I have no idea why, though.

Welcome to the RetroPie Forums!

I would personally get another controller (like a real one).
Can we also see a picture of the PS3 controller? It could be real, it could be fake and possibly RetroPie is assuming something else.

Well, I've actually tried selling it to no avail.

To top it off, getting another arcade-like controller is financially impossible for me rite now. :(

Is there no other option to make this work? Maybe a mod? Maybe gutting a regular USB controller?