Gamepads not detected on Linux Mint 20

Unity Engine
1

I have tried 2 different controllers and both are undetected in Unity with the new Input System version 1.0.0. They do show however with the utility jstest-sdl, for example:

➜  jstest-sdl --list
Found 1 joystick(s)

Joystick Name:     '8Bitdo NES30 Pro'
Joystick GUID:     05000000c82d00002038000000010000
Joystick Number:    0
Number of Axes:     6
Number of Buttons: 16
Number of Hats:     1
Number of Balls:    0
GameController:
  Name:    '8Bitdo NES30 Pro'
  Mapping: '05000000c82d00002038000000010000,8Bitdo NES30 Pro,a:b1,b:b0,back:b10,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,guide:b2,leftshoulder:b6,leftstick:b13,lefttrigger:a5,leftx:a0,lefty:a1,rightshoulder:b7,rightstick:b14,righttrigger:a4,rightx:a2,righty:a3,start:b11,x:b4,y:b3,'

Tried both in Unity 2020.1.7f1 Unity 2020.2.0b7.
What could be the reason or some starting points to diagnose this?

Thanks

edit: Probably worth mentioning that keyboard inputs are busted as well. The keyboard is detected, but keys return completely wrong keycodes like Q instead of an arrow key.

2

Joysticks detected by SDL should show up in the system. Where that is not the case, recommend filing a ticket with the Unity bug reporter.

Does the joystick show up under “Devices >> Unrecognized Devices” in the Input Debugger (Window >> Analysis >> Input Debugger)?

3

Nope, I don’t see “Unrecognized Devices” anywhere in the Input Debugger window. Thanks for the fast reply, I will fill a bug report as soon as possible!

4

Hi, just wanted to update you here since I can’t make any updates to the bug I filed with new information.

It turns out that inputs are now detecting fine! It seems there is an unrelated bug on Linux (either with Unity Hub or a special case with NVMe SSDs) which causes the editor to launch as root or something like of the sort. Unity process has my user on it when investigating with ps, so I’m not 100% sure, but my personal GTK preferences were not used which afaik is a typical symptom with this kind of problem. By running Unity directly with no arguments, my own GTK theme and preferences are used and it seems to fix a whole host of issues, including gamepads not detecting. Not sure exactly what’s going on but for now I can get inputs by launching Unity directly!