Comment 22 for bug 334101

A "thank you" to everyone working on this; I have a 780G and literally couldn't wait, so built the new DRM and have it working nicely with the 6.11 drivers. The improvement (even without giving 6.12 a shot) is quite dramatic for the basics of Firefox scrolling and window dragging.

For those who aren't having luck, this falls under "theoretically terribly obvious" but might deserve mention: Are you sure you've placed the modules in the right paths? The X.org instructions assume a hierarchy of drivers/char/drm/ while Ubuntu's 2.6.28-9 is using drivers/gpu/drm/ (and drivers/gpu/drm/radeon/). Following the instructions blindly and then relying on modprobe or a reboot to take care of things will probably result in loading the "old" versions.