Andreas Radke wrote:

Linux kernel package 2.6.31.3 brings changes for ATI users: Experimental kernel modesetting (kms) for the radeon driver is now enabled. If you have problems with the driver disable KMS. Read more in our [Ati KMS Wiki page][1].

[1]: http://wiki.archlinux.org/index.php/ATI#AMD.2FAti_cards_and_KernelModeSe tting_.28KMS.29

URL: http://www.archlinux.org/news/468/