I can confirm the same behaviour on a Dell r815 with a Intel x520 network card. They work fine with the 3.2 kernel but not with the current 3.8 one in Ubuntu. @Joseph: I was not able to boot from your 3.13 kernel from this source:
http://kernel.ubuntu.com/~jsalisbury/lp1245938
I can confirm the same behaviour on a Dell r815 with a Intel x520 network card. They work fine with the 3.2 kernel but not with the current 3.8 one in Ubuntu. @Joseph: I was not able to boot from your 3.13 kernel from this source:
http:// kernel. ubuntu. com/~jsalisbury /lp1245938