https://bugs.freedesktop.org/show_bug.cgi?id=93548
--- Comment #4 from Krzysztof A. Sobiecki sobkas@gmail.com --- (In reply to Edwin Smith from comment #3)
I am pretty sure this is the bug with xpad that can cause hangs when using force feedback. This was reported by Feral during development of XCOM and was fixed for SteamOS by Pierre-Loup but the fix has not made it's way upstream to the main linux kernel.
Mine or Florians bug you are talking about?