Comment 39 for bug 565981

I think there is a slight possibility of mixing multiple slowdown bugs here. If you experience slowdown and suspect it might not all be because of GEM objects, please glance at bug #555595 which was reported before xorg-server ubuntu2 with the 114 patch went in, and claims that 2.6.32-19 kernel introduced a slowdown that was not there in 2.6.32-18, on intel graphics. And I seem to have even something else which feels like sluggish X.org, namely that ondemand on my computer seems to set the CPU speed to 800MHz on lucid. So if you experience slowdowns of X, you may be interested in not only checking this bug report but checking your CPU clock speed when CPU load is there, and maybe pondering about that other bug which relates to a potential kernel regression with intel.

Please report these kernel regression possibilities and possible CPU speed setting failures to the bug #555595 instead of here. The CPU thing probably needs another place as well, but better in that bug report where I've already messed about than this GLX / GEM bug report.