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NVIDIA Proposes Extending RandR

NVIDIA

Published on 18 July 2011 10:33 AM EDT
Written by Michael Larabel in NVIDIA
4 Comments

While NVIDIA's proprietary driver for their GeForce/Quadro hardware still lacks RandR 1.2+ support (that will hopefully change when RandR 1.4 is finally out), NVIDIA has proposed extending RandR to support over-scan compensation. This support isn't for their mainline NVIDIA binary driver but rather their TEGRA Linux driver.

NVIDIA's Aaron Platner writes to the xorg-devel mailing list, "I'm trying to add support for overscan compensation to the Tegra X driver. This driver uses RandR 1.2, so I need to add an official mechanism for X clients to describe the desired configuration through the protocol."

NVIDIA is proposing that fields be added to DisplayModeRec for exposing horizontal and vertical borders to clients, a view-port rectangle attribute to the CRTC alongside the transform, a standardized property for outputs, or some other undecided change. Right now to provide RandR overscan compensation, Aaron is in support of adding a standardized property for the outputs as it would not require changing the Resize and Rotate protocol.

Regardless of the change, now that X.Org Server 1.11 is in a feature-freeze mode and has been branched, no RandR change will come before X.Org Server 1.12 in the next calendar year. Hopefully by then we will also have RandR 1.2+ support within NVIDIA's official (non-Tegra) proprietary driver.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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