This bug is probably not relevant anymore, I just tried on my laptop and it crashed nicely:
ii linux-crashdump 3.13.0.49.56 amd64 Linux kernel crashdump setup for the latest generic kernel Kernel: 3.16.0-28-generic On trusty. ** Tags removed: cts ** Changed in: kexec-tools (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1324125 Title: Unable to trigger a kernel crash dump on laptop Status in kexec-tools package in Ubuntu: Incomplete Bug description: kernel crash dump doesn't work on laptop 2. Ubuntu release, Trusty Steps to Reproduce: echo c > /proc/sysrq-trigger with linux-crashdump installed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1324125/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp