I can also confirm that setting GRUB_CMDLINE_LINUX_DEFAULT="tpm_tis.force=1" and running sudo update- grub fixed this problem on an Acer C720 Chromebook, running the default kernel that installs with Ubuntu 14.04.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1308264 Title: Ubuntu 14.04 Beta 2 stuck at "Switched to clocksource tsc" when booting up, then resumes booting to the login screen, after 1 minute To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1308264/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs