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.
Since the AtomBIOS branch appeared for the xf86-video-ati driver and the R500 support for DRM (the announcement), we've been trying out this open-source software on a variety of different ATI Radeon graphics cards. As we reported a few hours ago, the xf86-video-ati driver is working with the high-end HD 2900XT 512MB graphics card. We have now tried it out on multiple Radeon X1800 series graphics cards and it was running great there too. Using XAA acceleration was very smooth though with EXA we have ran into a few issues with the DRM R500 branch causing slowdowns. When trying out an ATI Radeon X800XL with the AtomBIOS branch (since the AtomBIOS support goes back to the R400 series) we have ran into TMDS issues. The exploration will continue and we'll report back soon with more findings and possible benchmarks.