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[Bug 1308264] 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

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Leo Milano <leomilano@xxxxxxxxx>
Date: Sun, 25 Jan 2015 22:05:02 -0000
Reply-to: Bug 1308264 <1308264@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

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

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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

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  On Ubuntu 14.04 Beta 2 (Final Beta), it takes remarkebly long to boot up into Ubuntu.  Ubuntu gets stuck at "Switched to clocksource tsc" for a almost 1 minute or longer, then it resumes booting up to the login screen.  On Ubuntu 13.10 it only takes about 7 seconds to get to the login screen, while it takes almost more than a minute to get on the login screen on Ubuntu 14.04 Beta 2. I hope this issue could be fixed.
   
  I have the Acer C720 (chromebook) that has been enabled to use legacy boot so I can use other OS's.  Other Acer C720 users have been faceing the same problem also.

  Video of Boot
  https://www.youtube.com/watch?v=PVkFTsEzS80

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