Comment 33 for bug 926917

Also confirm, same problem on 15.04 release, hitting both an old Microsoft mouse as well as a Razer mouse.

This seems identical to https://bugzilla.redhat.com/show_bug.cgi?id=869065 and they fixed it with their patch of xorg-x11-drv-evdev-2.8.4-1.fc19 and since there are no comments after that fixed about resolution or not then it seems that it may be fixed with their patch. 15.04 is on version 2.9.0 of xserver-xorg-input-evdev so either the fix is not upstreamed or the fix did not work, but regardless, this problem still persists as the buttons that should be mapped to tilt never report anything and when tilt is pressed it is changing the scrollwheel axis rapidly.