everytime when I found that runlevel returned unknown, some services must have not started at booting.
But if I delete the file of /var/run/utmp and reboot, runlevel will return 'N 2'. It means all services have started as usually. As far as I know, the runlevel command is an indicator of this sort of situation -- CUPS and other system services not starting at boot https://bugs.launchpad.net/bugs/554172 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs