AMD KMS/DRM Driver Moves Along For FreeBSD
Written by Michael Larabel in AMD on 16 March 2013 at 02:28 PM EDT. 25 Comments
Last month I reported on the AMD Linux DRM/KMS driver being ported to FreeBSD. With the developer receiving funding from the FreeBSD Foundation, progress on this open-source AMD kernel mode-setting driver is moving in a steadfast manner.

There's an Intel KMS/DRM driver to FreeBSD 9.1, but that's it as far as ports go of the Linux DRM drivers. However, the AMD KMS driver along with support for TTM memory management within the FreeBSD kernel is taking shape quickly.

The latest status update as of this week (14 March) for the AMD GPU KMS support in the FreeBSD world is working on a 9-STABLE port (rather than targeting FreeBSD 10 code), fixing of memory leaks and locking issues, and there is now proper EDID reading support so the correct resolution is used by the X.Org Server.

Previous to that latest update, the AMD KMS driver was running a KMS-enabled X.Org Server with the Firefox web-browser, but there were still a huge amount of debug logs and stability issues after a few minutes.

For those FreeBSD users with the AMD Radeon graphics hardware, updates to the state of this open-source graphics driver can be found on the FreeBSD Wiki. AMD graphics support is very important for FreeBSD since AMD doesn't release any Catalyst driver for the operating system, while NVIDIA offers its high quality proprietary driver for the OS.

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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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