I hit a similar issue, although it isn't actually related to plymouth. In my case I had a few network devices marked as auto in /etc/network/interfaces, including one that wasn't always present.
The ifup -a called in /etc/init/networking.conf waits a long time on these interfaces and eventually fails. But because a signal is not emitted before ifup ends, it triggers /etc/init/failsafe-boot.conf to wait until all network devices are up, which takes quite a while. I marked these devices 'allow-hotplug' and my boot is back to normal. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/898370 Title: ubuntu hangs during upstart boot, ie no sysinit is executed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/898370/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs