Chris Wilson of Intel's Open-Source Technology Center has released the xf86-video-intel 2.99.903 as the latest 3.0 pre-release for their X.Org driver.
The xf86-video-intel 2.99.903 that was released on Saturday has a lot of stabilization work but still isn't yet ready to be called xf86-video-intel 3.0.0. There's many changes ranging from build fixes to hardware enablement adjustments and performance tuning. Some items in particular including fixing V-Sync for Haswell, disabling Y-tiling for Gen4 hardware, DPMS fixes, and handling out-of-memory conditions more gracefully.
The earlier plans for the xf86-video-intel 3.0 driver called for SNA acceleration by default and supporting XMir
. SNA is still enabled by default in this release but Intel management decided to not support XMir
, the X11 transition layer for Canonical's Mir Display Server in Ubuntu.
More details on the xf86-video-intel 2.99.903 release can be found via the release announcement