Logs where the hang is not seen: <snip> [ 75.448494] kvm: exiting hardware virtualization [ 76.187482] reboot: Restarting system [ 76.191663] reboot: machine restart [ 76.197621] ACPI MEMORY or I/O RESET_REG. </snip>
The last 3 lines are not seen when the hang is observed. ** Attachment added: "console-logs-no-failure-case" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1777674/+attachment/5154317/+files/console-logs-no-failure.txt ** Also affects: dellserver Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1777674 Title: Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD servers Status in dellserver: New Status in linux package in Ubuntu: New Status in systemd package in Ubuntu: New Bug description: Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD servers when under graceful reboot stress for 12hrs. * This hand is observed only when Onboard SATA DVD Drive is connected. * Not seen with Ubuntu 16.04.4 (HWE kernel v4.13) * Seen with Ubuntu 18.04 (4.15.0-23-generic, 4.15.0-20-generic) Steps: Setup a DellEMC AMD server with Onboard DVD Drive, install Ubuntu 18.04 and start reboot stress After a few reboots, observe that the machine hangs at "kvm: exiting hardware virtualization" and does not proceed with reboot cycles. Only physical reset helps in continuing the reboot test. To manage notifications about this bug go to: https://bugs.launchpad.net/dellserver/+bug/1777674/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
