The symptoms you describe (and that are described in the linked forum discussion) point to a problem with the kernel graphics handling. Reassigning to the kernel.
** Package changed: plymouth (Ubuntu) => linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1315358 Title: boot appears hung after switching display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1315358/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
