Last night, I upgraded my Ubuntu 10.04 to 10.10, reinstlled x-eggers and got latest xorg 7.10 dev code. I was running r300g on R520.
To test sanity of the graphics stack, I fired up PTS and run lightmarks 2008. My score was 6.8 fps!
I my have to ask, are those drivers really used 3D HW accerleration? I mean is one have to expect a lightmarks of just 6.8 fps?
Am I doing something wrong?
glxinfo | grep OpenGL
From the PTS report it looks as if you are booting an old kernel. For the rest it is hard to diagnose without seeing your log files. Try also with other applications than lightmarks.