Phoronix: In-Kernel Power Management For ATI KMS

While the Radeon R100-R500 series kernel mode-setting support appeared in the Linux 2.6.31 kernel and DRM patches pending for the Linux 2.6.32 kernel that bring KMS support for newer hardware and other improvements, the ATI KMS driver is not complete. Features such as power management need to be brought into the kernel driver (for Intel too) where they will be better off compared to the traditional DDX drivers...

http://www.phoronix.com/vr.php?view=NzUyOA