I think you can address this bug for Valve itself. Steam package have this file to add udev rules and just can add lines for Steam controller with vendor and product ID.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1498655 Title: Steam Controller support: need read-write access to Valve-owned input event device nodes. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/steam/+bug/1498655/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
