Comment 3 for bug 1552985

These are the messages shown on the screen when I press a key just after the Xubuntu splash screen starts:

wait-for-state stop/waiting
 *
 * Stopping apt-cacher-ng apt-cacher-ng... [OK]
 * (not running).
 * Stopping rsync daemon rync [OK]
 * speech-dispatcher disabled; edit /etc/default/speech-dispatcher
* Stopping VirtualBox kernel modules [OK]
nm-dispatcher.action: Caught signal 15, shuting down...
 * Asking all remaining processes to terminate... [OK]
* All processes ended within 1 seconds... [OK]
nm-dispatcher.action: Caught signal 15, shutting down...
ModemManager [857]: <warn> Could not acquire the 'org.freedesktop.ModemManager1' service name

ModemManager [857]: <info> ModemManager is shut down

* Deactivating swap... [OK]
* Unmounting local filesystems... [OK]
* cryptswap1 (stopped)...
* Stopping early crypto diskis... [OK]
mount: / is busy
 * Will now halt
[ 50.706518] reboot: Power down

The computer hangs just on the last message, the screen remains on with all those messages visible until I keep the power button pressed to force a shutdown.