Can't get xbox360 controller to work in Unepic.

My controller works with virtually every other game, but Unepic doesn't seem to recognise it at all. I've tried both xpad and xboxdrv (plus xboxdrv with --mimic-xpad,) and even steamos-xpad. None of these drivers seem to work with Unepic.



I tried going to the calibration section of the settings menu but it just doesn't detect anything, and under "Test grid" it just says "Gamepad not available".



I'm on Arch Linux 64bit with the latest version of Unepic (v1.50.4)