AMD R9 290 Hawaii Users Will Have An Important Fix With Linux 3.20
Written by Michael Larabel in AMD on 13 February 2015 at 12:23 PM EST. 20 Comments
AMD --
Beyond the big set of AMD Radeon changes for Linux 3.20, Alex Deucher of AMD mailed in some important Radeon DRM driver fixes today that are a big deal for some R9 290 "Hawaii" users of the open-source driver.

Alex's Radeon drm-next-3.20 pull request today has a fix for embedded DisplayPort for bridge chips, but the other change is fixing the voltage setup on Hawaii. The fixed voltaged setup on Hawaii is for properly fetching the real voltage values from AtomBIOS to fix problems with dynamic clocking on certain R9 290/290X graphics cards.

The Hawaii voltage fix is related to this FreeDesktop.org bug with some graphics cards not properly re-clocking. The pull request with these two fixes can be found on the dri-devel list.
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Michael Larabel is the principal author of Phoronix.com 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 OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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