https://bugs.freedesktop.org/show_bug.cgi?id=29066
--- Comment #5 from Yann yannubuntu@gmail.com 2010-07-16 06:57:20 PDT --- Dear all, I am the Launchpad bug reporter.
I tried kernel 2.6.35-020635rc5-generic , and I see no change when running /usr/lib/xscreensaver/pipes : I get the same error message ("radeon: The kernel rejected CS, see dmesg for more information.") in terminal and the screensaver does not crash (like with the normal Lucid kernel).