Phoronix Kernel-oriented News
- Dr. Roy Schestowitz
- 2014-04-08 09:58:01 UTC
- Modified: 2014-04-08 09:58:01 UTC
Linux
Linux 3.15
For those not keeping up to date on all of the Phoronix articles covering the Linux 3.15 kernel changes that landed in the past week, here's a recap of the changes that were merged so far half-way through the Linux 3.15 merge window.
Graphics Stack
The very large DRM pull request for the Linux 3.15 kernel was submitted just moments ago with significant updates to the open-source Linux graphics drivers.
Wayland's reference compositor Weston now has support for using the new XWayland DDX support that was merged into the X.Org Server.
Users of the Samsung Exynos DRM driver will see several updates appear with the Linux 3.15 kernel.
Users of the Samsung Exynos DRM for display support with Samsung's recent ARM SoCs can find the addition of a MIPI-DSI driver, S6E8AA0 MIPI-DSI-based panel drivers with accompanying DeviceTree bindings, a LD9040 parallel-panel driver, super device support, and other fixes.
NVIDIA
In my testing of Ubuntu 14.04 LTS with the Linux 3.13 kernel and Mesa 10.1 for the open-source graphics driver stack provided by Nouveau for NVIDIA GeForce graphics hardware, only the Fermi and Kepler GPUs are running reliably. While these newer NVIDIA GPUs are running stable with Ubuntu 14.04, the performance is still a wreck due to lack of reclocking.
The xf86-video-nouveau driver as of today supports server-managed file descriptors. As explained in the earlier Phoronix article, Last month we wrote about Red Hat working on a suid root wrapper for the X.org Server and other improvements being led by Red Hat's Hans de Goede to run Xorg in more configurations without needing root support. As part of this, sever managed file descriptors (FDs) has been one of the changes needed by the X.Org graphics drivers for supporting this change of running the xorg-server without root rights. Besides needing changes to the DDX drivers and the X.Org Server (those changes are landing with X.Org Server 1.16 this summer), systemd-logind is also needed.
Benchmarks
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