X.org is an evolution from the XFree86 project, that became the widely accepted "reference" implementation in 2004. X.org improves upon XFree86 in terms of the way the project is coordinated, the way the codebase is organised and the approach to graphics acceleration.
The X.org team is hard at work on a new Acceleration Architecture, as well as the inclusion of a variety of exciting new X features such as window composition (which allows for sexy transparency effects).
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All bugs Latest bugs reported
Bug #1655752: Xorg crashed with SIGABRT in libinput_device_config_tap_get_finger_count()
Reported on 2017-01-15
Bug #1655782: Elfdalian layout + merge with Debian 2.18-1
Reported on 2017-01-11
Bug #1655189: Cannot record videos into Theora
Reported on 2017-01-10
Bug #1643843: Distorted colours after suspend / resume cycle
Reported on 2016-11-23
Bug #1610591: Video acceleration regression for Radeon Xpress 200M (r300) in xorg-lts-xenial & xorg-lts-wily
Reported on 2016-08-31