libxxf86dga1-dbg 2:1.1.3-2 (amd64 binary) in ubuntu quantal

 libXxf86dga provides the XFree86-DGA extension, which allows direct
 graphics access to a framebuffer-like region, and also allows relative
 mouse reporting, et al. It is mainly used by games and emulators for
 games.
 .
 This package contains the debug versions of the library found in libxxf86dga1.
 Non-developers likely have little use for this package.
 .
 More information about X.Org can be found at:
 <URL:http://www.X.org>
 .
 This module can be found at
 git://anongit.freedesktop.org/git/xorg/lib/libXxf86dga