Can you test v3.13 final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-trusty/
If it fails, we can "Reverse" bisect between v3.13 and v3.14-rc1. If v3.13 final boots fine, then that would indicate an Ubuntu specific SAUCE patch causing the bug.
Can you test v3.13 final: kernel. ubuntu. com/~kernel- ppa/mainline/ v3.13-trusty/
http://
If it fails, we can "Reverse" bisect between v3.13 and v3.14-rc1. If v3.13 final boots fine, then that would indicate an Ubuntu specific SAUCE patch causing the bug.