AMD has put out their first public documentation concerning their Radeon HD 6900 "Cayman" series graphics processors. This 492 page document describes the Cayman instruction set architecture. We have also received an update at Phoronix from AMD concerning the Radeon HD 6900 series open-source support under Linux.

It's going on two weeks since the RadeonHD driver was made available, which is AMD's sanctioned open-source driver for the Radeon X1000 (R500) and Radeon HD 2000 (R600) series (as well as future generations of AMD GPUs).

Months after the ATI Radeon HD 5000 series (known by the "Evergreen" family codename) was introduced, AMD has finally pushed out the first bits of open-source code. This morning if you are to checkout the xf86-video-ati DDX driver branch there is initial user-space mode-setting support for the Radeon HD 5000 series GPUs.

Back in September when the RadeonHD Linux driver was finally introduced, it offered support for both the R500 and R600 series. On the first day of the driver's availability, we couldn't help but to use the RadeonHD with the 2900XT, which has been ATI's flagship graphics card.

Today AMD has officially released their low-end and mainstream graphics cards in the Radeon HD 2000 family, the Radeon HD 2400 and Radeon HD 2600 series respectively. While these new graphics cards should already be at your favorite retailer or presently in route, where are the Linux drivers?

AMD continues to abide by their commitment to provide open-source support for their graphics cards and as proof of that this afternoon they have released their initial hardware acceleration code that supports the ATI Radeon HD 5000 "Evergreen" family of graphics processors.

As we shared a few days ago, Fedora 13 will provide OpenGL acceleration support for NVIDIA graphics cards via the Nouveau driver when installing the Mesa DRI experimental drivers package. There is finally 3D acceleration for NVIDIA graphics cards using an open-source driver on Linux without having to depend upon NVIDIA's official binary driver.

While the ATI Radeon HD 5800 graphics cards were introduced last week, the open-source support for the Radeon HD 2000/3000/4000 series is finally maturing. In this article we have benchmarks showing the 2D performance between these two driver options with both an R600 and R700 graphics card.

The open-source Avivo driver is currently bound to supporting the ATI R500 GPU family and with efforts now being focused on the RadeonHD driver, this reverse-engineered driver will likely never support the newer GPUs (The Death Of The R500 Avivo Driver). However, the RadeonHD driver that was pushed out into the public a few hours ago does support the R600 series.