I was able to successfully crashdump using the steps above but with 'crashkernel=1024M' (default values are too low). I'll mark this 'Invalid' for now, please re-test and if you encounter the failure re-open the bug.
$ uname -a Linux hostname 3.19.0-15-generic #15-Ubuntu SMP Thu Apr 16 23:32:13 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux ubuntu@hostname:~$ ls /var/crash/201504240416/ dmesg.201504240416 dump.201504240416 ** Changed in: linux (Ubuntu) Status: Triaged => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1424275 Title: Ubuntu 15.04 (non-virtualized): System hung after kdump is trigger from Power NV system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1424275/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs