The only controller I have that works on my pc is my official gamecube controller using an unofficial third-party adapter. The controller itself works perfect in Windows and on my Switch and Wii. But, for whatever reason, on my Xubuntu 18.04.2 installtion, it acts like the right trigger is being constantly held down.
It seems no one else in the entirety of the internet has had this problem so I really have no idea what to do about this..
edit: I borrowed my cousins wired Xbox 360 controller that we know works, and when I plug it into my computer the left joystick always things its being held down. Seems like every controller I use just doesn't work right whatsoever