https://bugzilla.kernel.org/show_bug.cgi?id=29022

--- Comment #9 from Marc Koschewski marc@osknowledge.org 2011-03-06 11:42:29 --- I updated the whole X11 stuff to current git and the problem seems to be gone.

I have the freezing kernel running for about 15 minutes now and tried anything to make it freeze (composite WM, Firefox, several glxgears instances and fullscreen terminals just doing some stuff to make it print a lot of text (like cat'ing dmesg in loops)). Weird.

... but the workaround cannot be to upgrade X11 to HEAD. :)

Any hints on what one could do to track this down?