id summary reporter owner description type status priority milestone component resolution keywords cc fix_version see_also 1053 cluster reboots sometimes hang (2) kaduk "Sometimes, when a cluster machine decides it wants to reboot as a user is logging out, it fails to actually reboot, and ends up not at the Ubuntu splash screen, but at the text console with a bunch of things like: {{{ INFO: task [task]:NN blocked for more than 120 seconds ""echo 0 > /proc/sys/kernel/hung_task_timeout_secs"" disables this message }}} where [task] is things like fsnotify_mark, dbus-daemon, gdm-binar, polkitd, and N is perhaps the corresponding pid? It is possible to soft-reboot machines in this state, though I don't remember whether ctrl-alt-del works or sysrq-b was needed." defect closed normal The Distant Future -- duplicate