Comment 59 for bug 544496

After upgrading to Lucid, video performance was noticeably slower (for example, when paging up and down in Firefox when viewing slashdot.org, there was noticeable lag). This is with compiz disabled. When I run with radeon.modeset=0, performance seems to be normal. I am wondering if I am experiencing the same bug as the original poster. My video card:

01:00.0 VGA compatible controller: ATI Technologies Inc M22 [Mobility Radeon X300]