PowerXpress Runtime Power Management Added
Written by Michael Larabel in AMD on 20 September 2013 at 08:00 PM EDT. 11 Comments
Open-source developers are adding run-time power management support to the open-source Radeon DRM graphics driver for supporting ATI/AMD PowerXpress laptops.

There's been Radeon DPM power management since the Linux 3.11 kernel for improving the thermal performance and power consumption of AMD Radeon graphics processors. The results have been great and the Radeon DPM support was extended in the Linux 3.12 kernel.

The latest work on the Radeon power management front has been for adding run-time power management to support Radeon PowerXpress laptops -- mobile systems bearing a combination of Intel and Radeon GPUs. Landed in the Linux 3.12 kernel was GPU run-time power management support but the initial implementation for Optimus laptops.

David Airlie started working on this PowerXpress power management support while it's now been extended by Alex Deucher with this patch series. Alex is reporting the PowerXpress power management support is now working well on the hardware he's had access to testing.

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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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