Ok, removing plymouth with apt-get purge (not by disabling splash script) solved the issue and allowed me to boot.
** Changed in: upstart (Ubuntu) Status: Confirmed => Fix Released -- Lucid beta 1 won' t boot, upstart scripts broken https://bugs.launchpad.net/bugs/552046 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