Acabei de encontrar uma inicialização muito estranha (já que não tenho "quiet" nem "splash" nas opções do grub). Então, eu dei uma olhada no log:
crysman@crysman-U36SD:~$ cat /var/log/boot.log
* Starting Bridge file events into upstart [ OK ]
Skipping profile in /etc/apparmor.d/disable: usr.bin.firefox
Skipping profile in /etc/apparmor.d/disable: usr.sbin.rsyslogd
* Starting SystemD login management service [ OK ]
* Starting AppArmor profiles [ OK ]
* Starting bluetooth daemon [ OK ]
* Starting startpar bridge for notification of upstart job start/stop [ OK ]
* Stopping startpar bridge for notification of upstart job start/stop [ OK ]
* Starting mDNS/DNS-SD daemon [ OK ]
* Starting Reload cups, upon starting avahi-daemon to make sure remote queues are populated [ OK ]
* Starting Reload cups, upon starting avahi-daemon to make sure remote queues are populated [fail]
* Setting sensors limits [ OK ]
* Setting up X socket directories... [ OK ]
* Stopping System V initialisation compatibility [ OK ]
* Starting network connection manager [ OK ]
* Starting System V runlevel compatibility [ OK ]
* Starting [ OK ]
* Starting automatic crash report generation [ OK ]
* Starting [ OK ]
* Starting cups-browsed - Bonjour remote printer browsing daemon [ OK ]
* Starting Restore Sound Card State [ OK ]
* Starting ACPI daemon [ OK ]
* Starting anac(h)ronistic cron [ OK ]
* Starting [ OK ]
* Starting [ OK ]
* Starting save kernel messages [ OK ]
* Starting [ OK ]
* Starting [ OK ]
* Stopping Restore Sound Card State [ OK ]
* Starting CPU interrupts balancing daemon [ OK ]
* Starting startpar bridge for notification of upstart job start/stop [ OK ]
* Stopping startpar bridge for notification of upstart job start/stop [ OK ]
* Stopping Restore Sound Card State [ OK ]
* Starting startpar bridge for notification of upstart job start/stop [ OK ]
* Stopping startpar bridge for notification of upstart job start/stop [ OK ]
* Stopping save kernel messages [ OK ]
* Starting regular background program processing daemon [ OK ]
* Stopping anac(h)ronistic cron [ OK ]
Existem entradas repetidas, iniciar / parar repetidamente, entradas vazias como "* Iniciando" ... Por que isso acontece? Alguma causa que você possa pensar?
Essa "entrada startpar" e entradas "Iniciando" vazias certamente não estavam lá até hoje (eu instalei algumas coisas).
Muito obrigado
Estou executando o Xubuntu 13.10 (nova instalação há 3 dias) Informações adicionais sobre depuração:
cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-3.11.0-12-generic root=UUID=751f644f-5523-465f-bbaa-ef75ed4373f1 ro i915.i915_enable_rc6=1
Tags boot