AMD R9 290 Hawaii Users Will Have An Important Fix With Linux 3.20
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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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