Want to Debug a Kernel Crash? But the system no longer responds?

If your kernel crashes every once in a while and you want to find out

what happened and/or create a good bug report so it can get fixed,

here's all you need to do in Ubuntu 12.04+:



sudo apt-get install linux-crashdump apport



This automatically installs and sets up a crash kernel to be loaded

via kexec in case of a kernel panic. And it installs apport to be able

to easily report the crash to Ubuntu. The logs will be in /var/crash.



Read here for more: https://wiki.ubuntu.com/Kernel/CrashdumpRecipe

And this ebook might help with debugging a crash:

http://www.dedoimedo.com/computers/crash-book.html#download



Of course sometimes this might not work for very hard crashes. But

most crashes should be able to be properly dumped and reported this

way. Good luck!