According to Big Picture Mode on my Steam library, whenever I would go to it, it would have the keyboard icon. That would lead me to believe that a controller is not supported in Linux. I know it works like that on Windows.

I finished SR3 and SR4 with my controller, I can say it worked.
I really doubt they updated the game the last months.

any idea ?

I guess with x360 you mean the xbox360 controller?
Aren't there 2 versions of it, wireless and wired?

Does it work with other games, beside SR3/SR4?

Does lsusb showing your controller?
For example (xbox controller, not xbox360):
lsusb

QuoteBus 002 Device 003: ID 045e:0202 Microsoft Corp.
Bus 002 Device 002: ID 045e:001c Microsoft Corp.

If yes, is there a input-device called js0 (/dev/input/js0)?
Yes, try:
cat /dev/input/js0
and move your Sticks around to see if your controller produce any input.



If all fails, maybe try xboxdrv:
https://pingus.seul.org/~grumbel/xboxdrv/
and:
https://unixblogger.com/2016/05/31/how-to-get-your-xbox-360-wireless-controller-working-under-your-linux-box/

Yes, I didn't mentioned it's a wireless xbox360 controller.
There is no problem with the controller, I play Rocket League without issue and just launched Dolphin-emu and Steam Big Picture.

I tested withe a wired xbox360 controller and it worked :'(
What can I do ?

Hi,
I think I've found something interesting. I just installed steam-devices for Steam Controller because it didn't worked.
I just launched SR3 and I can play with my wireless xbox360 controller.

Maybe someone has an explanation ?

I am glad to hear that your controller works.


Package: steam-devices
...
Description-en: Device support for Steam-related hardware
 This package provides udev rules for various Steam-related hardware devices
 such as the Steam Controller (gamepad) and the HTC Vive (virtual reality
 headset).

Obviously one (some) of those udev rules "for various Steam-related hardware devices" also applies to your XBox360 controller - good to know, I wasn't aware of that.

:D
Ready for Faeria and Saints Row: Gat out of Hell