An Ubuntu Kernel To Play With The New AMDGPU + Radeon 4.5 Features

Written by Michael Larabel in Radeon on 23 December 2015 at 09:00 AM EST. 2 Comments
If you are anxious to help test out the new changes of the Radeon and AMDGPU kernel drivers that will be added to Linux 4.5, I've spun up a kernel for Ubuntu x86_64 systems to try out this experimental code.

Last night I spun an Ubuntu x86_64 kernel build against Alex Deucher's drm-next-4.5 branch, which includes the Radeon and AMDGPU driver changes for DRM-Next to then go mainline during the Linux 4.5 merge window.

Found in this branch is the AMDGPU PowerPlay support as well as other Radeon/AMDGPU features like some optimizations to the VM and scheduler, elimination of Radeon user-space mode-setting, fixes, and more.

You can find this fresh spin of the AMDGPU/Radeon 4.5 features via linux-image-4.4.0-rc3-4.5-next-phx-xmas_4.4.0-rc3-4.5-next-phx-xmas-1_amd64.deb. Only test if you are comfortable with running an experimental kernel on your system.

This is the kernel I've been using for some fresh AMDGPU benchmarks I'll be publishing later today. This kernel is built with the PowerPlay Kconfig switch but still requires setting the appropriate module parameter as explained in How To Use AMDGPU PowerPlay On The Linux 4.5 Kernel for having power management on the latest AMD GPUs.
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Michael Larabel

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 20,000 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, LinkedIn, or contacted via

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