I have the same issue, and have repeated it on two computers (with up to date Ubuntu server 12.04) now (and I have a third I can test also). Procedure: 1.) start with a fresh boot. 2.) from a tty session Issue "sudo sysctl kernel.sched_autogroup_enabled=0" (or via the method Chris used above) 3.) open an ssh session to the computer (in my case I am using putty from a windows computer). 4.) from either the putty session or the tty session issue "sudo shutdown -r now". 5.) the computer will crash.
Note: if I disable autogroup as a kernel option in grub, then the crash will not occur. I.e. this line in grub: GRUB_CMDLINE_LINUX_DEFAULT="noautogroup" I found this bug report while doing my due dilegence searching before entering a new bug report. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1055222 Title: Kernel panic on reboot after sched_autogroup_enabled disabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1055222/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
