This seems to be some major IRQ issue for your system. Can you test the latest mainline build available at http://kernel.ubuntu.com/~kernel-ppa/mainline/ to see if there's a fix upstream? If not, I suggest opening a bug at bugzilla.kernel.org. If you do open a bug there, please post the url here so we can link the two bugs.
This seems to be some major IRQ issue for your system. Can you test the latest mainline build available at http:// kernel. ubuntu. com/~kernel- ppa/mainline/ to see if there's a fix upstream? If not, I suggest opening a bug at bugzilla. kernel. org. If you do open a bug there, please post the url here so we can link the two bugs.
Thanks