xserver-xorg-input-mouse-lts-vivid 1:1.9.1-1~trusty1 (i386 binary) in ubuntu trusty

 This package provides the driver for mouse input devices. It is mainly used
 on non-Linux operating systems such as BSD and Solaris. Most
 configurations on Linux will use evdev, the kernel's event delivery
 mechanism, and do not need this package.
 .
 See the inputattach package if your mouse is not automatically
 detected by the Linux kernel, for example because it is a serial mouse.
 .
 More information about X.Org can be found at:
 <URL:http://www.X.org>
 .
 This package is built from the X.org xf86-input-mouse driver module.