[Bug 30235] New: xinput2: erratic mouse movement

http://bugs.winehq.org/show_bug.cgi?id=30235

Bug #: 30235
           Summary: xinput2: erratic mouse movement
           Product: Wine
           Version: 1.4
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

In many games, such as Bioshock or STALKER: Clear Sky, mouse movement in-game
is very erratic, to the point of being completely broken. The slightest mouse
movement causes the view to jump around.

This is only the case when Wine is using Xinput2, when compiled with
--without-xinput2 it's working fine (Well, with the usual limitations of
course).

As far as I can tell, this isn't a regression in Wine, but seems to have
happened as a result of some X upgrade.

I'm guessing that XI2 is broken on my system, but I'm not sure how to track
this down. I'm using Xorg 1.12.0, evdev 2.7.0, libxi 1.5.99.2.