Intel Releases IGD OpRegion Spec
Written by Michael Larabel in Intel on 2 October 2008 at 06:05 PM EDT. Add A Comment
Back in January, Intel had released 965 and G35 programming documentation to assist the open-source community in better enriching the X.Org display driver for their hardware. Intel hasn't yet released the documentation for their new GMA X4500 series, but today they have published their IGD OpRegion Specification.

Opening up this specification allows those non-Intel employees to work on ambient light sensor support and hotkey-driven display output switching, among other features. IGD OpRegion is used on Intel IGPs in the 965 series and newer. Version 1.0 of this specification is 134 pages long.

Intel IGD OpRegion support had appeared in the Linux kernel back in August (kernel patch), but the documentation is finally being published today. The announcement was made on the X.Org mailing list and the specification can be downloaded from the Intel documentation page.

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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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