Ubuntu
linux package

  1. Bug #1308264
  2. Comment #31

Comment 31 for bug 1308264

Revision history for this message
Leo Milano (lmilano) wrote : Re: Ubuntu 14.04 Beta 2 stuck at "Switched to clocksource tsc" when booting up, then resumes booting to the login screen, after 1 minute

Same here, I am running the current version of Xubuntu 15.04 on an HP Chromebook 14 Falco, and the (50s) delay disappears when using the tpm_tis.force=1 option in grub.

I wonder if this has to do with loading Ubuntu from coreboot, since the setting is related to Trusted Platform management between the kernel and the Bios [1]. I am attaching some relevant dmesg output [2].

Cheers!
Leo

[1] http://resources.infosecinstitute.com/linux-tpm-encryption/

[2] Dmesg output:

[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-3.18.0-9-generic root=UUID=e59338a7-cc1f-4053-9a89-82ee7d3dd0db ro quiet splash tpm_tis.force=1 vt.handoff=7

[ 0.000000] DMI: Hewlett-Packard Falco, BIOS 08/13/2014

[ 0.671007] tpm_tis tpm_tis: 1.2 TPM (device-id 0xB, rev-id 16)
[ 8.608433] tpm_inf_pnp 00:08: Found TPM with ID IFX0102