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 #1437740: Ubuntu Vivid Vervet beta2 guest does not boot to Unity from QEMU-KVM host
Reported 2 hours ago
Bug #1436590: Intel Display i915 driver crashes, Thinkpad X1 carbon Gen 3
Reported on 2015-03-29
Bug #518056: cedilla appears as accented c (ć instead of ç) when typing 'c
Reported on 2015-03-27
Bug #1418295: Black screen after resuming from suspend
Reported on 2015-03-21
Bug #1432843: Lubuntu failed to boot
Reported on 2015-03-19