Comment 1 for bug 412704

Please run the following command which will automatically gather and attach general kernel debug information:

apport-collect -p linux 412704

Unfortunately without seeing the output of the kernel panic, it'll be hard to nail down what's going wrong here. You may want to try the latest mainline kernel build a well just to verify if this issue exists with the upstream kernel. See https://wiki.ubuntu.com/KernelTeam/MainlineBuilds . Let us know your results. Thanks.