![]() ![]() However, the TTM code has since been overhauled and can now also be used via a GEM API. While TTM was originally also intended to be used with the Intel KMS driver, the Intel developers weren't too happy with it and started GEM as an alternative. Instead of GEM, the Radeon KMS code uses another new addition, the TTM GPU memory manager, for managing the memory and for coordinating access to the processing units. However, even the Radeon KMS code integrated with 2.6.31 hasn't reached full maturity yet as a result, the developers have marked it as a staging driver for now. The development of KMS for the R6xx and R7xx GPUs of the Radeon HD series 2000, 30 is still in progress. Masterminded by the programmers of the "radeon" X.org driver, the newly integrated KMS code supports Radeon GPUs up to series R5XX – this includes all Radeon models up to and including X1950. ![]() This involves considerable installation and tuning which is best left to the Linux distributor of your choice. To benefit from the advantages of KMS – central graphics management in one place, improved suspend, and less complex graphics drivers – and get the X Server to work with KMS, it is necessary to update the X.org drivers, Libdrm, and Mesa3D. Having added the Intel-specific GEM (Graphics Execution Manager) to the kernel with Linux 2.6.28 and Kernel-Based Mode-Setting (KMS) support, which is based on GEM, with 2.6.29, the developers have now integrated KMS code for Radeon graphics chips by AMD/ATI. Flicker-free X startup for Radeon graphics chips ![]() For other articles on 2.6.31 and links to the rest of the "Coming in 2.6.31" series, see The H's Kernel Log - 2.6.31 Tracking page. ![]()
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